Intel Motherboards - Showing 1993 - 2016 of 2513 Products
Refurbished: MSI Z590M BOMBER Intel Z590 LGA 1200 DDR4 128GB Micro ATX Motherboard
- Memory Standard: Support dual channel DDR4 5333 (OC)/5200 (OC)/5000 (OC)/4800 (OC)/4600 (OC)/4533 (OC)/4400 (OC)/4300 (OC)/4266 (OC)/4200 (OC)/4133 (OC)/4000 (OC)/3866 (OC)/3733 (OC)/3600 (OC)/3466 (OC)/3400 (OC)/3333 (OC)/3300 (OC)/3200 (OC)/3000 (OC)/2933 (JEDEC)/2666 (JEDEC)/2400 (JEDEC)/2133 (JEDEC) MHz memory
- Audio Chipset: Realtek AL897 Codec 7.1-Channel High Definition Audio
- Brand: MSI
- CPU Socket Type: LGA 1200
- Chipset: Intel Z590
- CPU Type: Supports 10th Gen Intel Core™ Processors, 11th Gen Intel Core™ Processors, Pentium Gold and Celeron Processors Processor socket LGA1200
- Maximum Memory Supported: 128GB
- PCI Slots: 1x PCIe x16 slot (From CPU) PCI_E1 (From CPU) Support up to PCIe 4.0 for 11th Gen Intel CPU Support up to PCIe 3.0 for 10th Gen Intel CPU 2x PCIe 3.0 x1 slots (From Z590 chpiset...
- Model #: 1211981-1-322
- Item #: 9SIVRE6KWM3484
- Return Policy: soft_9 Return Policy
Refurbished: MSI PRO H310M PRO-VDH PLUS LGA 1151 (300 Series) Intel H310 HDMI SATA ...
- Memory Standard: DDR4 2666
- Number of Memory Slots: 2x288pin (DDR4)
- PCI Express x16: 1 x PCI Express x16
- Audio Chipset: Realtek ALC887
- Brand: MSI
- CPU Socket Type: LGA 1151 (300 Series)
- Chipset: Intel H310
- Form Factor: Micro ATX
- Model #: H310M PRO-VDH PLUS
- Item #: 9SIVMRNKWT9063
- Return Policy: dnajknwd Return Policy
Refurbished: MSI B360M WIND Intel B360 LGA 1151 DDR4 32GB Micro ATX Motherboard
- Memory Standard: Supports dual-channel DDR4 2666/2400/2133MHz memory
- Audio Chipset: Realtek ALC887 Codec 7.1 channel high fidelity audio
- Brand: MSI
- CPU Socket Type: LGA 1151
- Chipset: Intel B360
- CPU Type: Supports 8th generation Intel Core processors, as well as Intel Pentium Gold and Celeron processors for Socket LGA1151
- Maximum Memory Supported: 32GB
- PCI Slots: 1 x PCIe 3.0 x16 slot 2 x PCIe 3.0 x1 slots
- Model #: MSI B360M WIND
- Item #: 9SIVRE6KWM7552
- Return Policy: soft_9 Return Policy
Refurbished: MSI B250M PRO-V Intel B250 LGA 1151 DDR4 32GB Micro ATX Motherboard
- Memory Standard: Supports dual-channel DDR4 2400/2133MHz memory
- Audio Chipset: Realtek ALC887 decoding chip - 7.1 channel high-quality sound effects
- Brand: MSI
- CPU Socket Type: LGA 1151
- Chipset: Intel B250
- CPU Type: Supports 6th/7th generation Intel Core i3/i5/i7 processors, as well as Intel Pentium and Celeron processors with pin LGA1151
- Maximum Memory Supported: 32GB
- PCI Slots: 1 PCIe 3.0 x16 slot 2 PCIe 3.0 x1 slots
- Model #: 1211981-1-60
- Item #: 9SIVRE6KWM3432
- Return Policy: soft_9 Return Policy
Refurbished: MSI H510M-A PRO Intel H510 LGA 1200 DDR4 64GB Micro ATX Motherboard
- Memory Standard: Support dual-channel DDR4 3200/3000/2933/2800/2666/2400/ 2133MHz memory Support ECC UDIMM memory module (running in non-ECC mode) Supports Intel Extreme Memory Profile (XMP) 2.0 technology
- Audio Chipset: Realtek ALC897 Codec 7.1-Channel High Definition Audio
- Brand: MSI
- CPU Socket Type: LGA 1200
- Chipset: Intel H510
- CPU Type: Supports 10th Gen Intel Core Processors, 11th Gen Intel Core Processors, Pentium Gold and Celeron Processors1
- Maximum Memory Supported: 64GB
- PCI Slots: 1x PCIe x16 slot (From CPU) Support up to PCIe 4.0 for 11th Gen Intel CPU Support up to PCIe 3.0 for 10th Gen Intel CPU 1x PCIe 3.0 x1 slot (From PCH) 1x M.2 slot with E key for WiFi module only(M2_2)
- Model #: 1211981-1-98
- Item #: 9SIVRE6KWM3433
- Return Policy: soft_9 Return Policy
Refurbished: ASUS Prime Z790-P WiFi LGA 1700 (Intel 13th&12th Gen) ATX Motherboard ...
- Memory Standard: Supports DDR5 7200+(OC)/7000(OC)/6800(OC)/6600(OC)/ 6400(OC)/ 6200(OC)/ 6000(OC)/ 5800(OC)/ 5600/ 5400/ 5200/ 5000/ 4800 Non-ECC, Un-buffered Memory* Supports Intel Extreme Memory Profile (XMP) OptiMem II * Supported memory types, data rate(Speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information refer to www.asus.com for memory support list. * Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
- Number of Memory Slots: 4x288pin (DDR5)
- Audio Chipset: Realtek 7.1 Surround Sound High Definition Audio CODEC* - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - Premium audio capacitors - Dedicated audio PCB layers * A chassis with an HD audio module in the front panel is required ...
- Model #: PRIME Z790-P WIFI
- Item #: 9SIVRTNKX61623
- Return Policy: Jiamayanonly Return Policy
Refurbished: GIGABYTE GA-Z77X-UD3H ATX Intel Motherboard
- Memory Standard: DDR3 2666(OC)/1600/1333/1066
- Number of Memory Slots: 4x240pin
- Audio Chipset: VIA VT2021
- Brand: GIGABYTE
- CPU Socket Type: LGA 1155
- Chipset: Intel Z77
- Form Factor: ATX
- Serial ATA (SATA): 2 x SATA 6Gb/s
- Model #: GA-Z77X-UD3HSNRFB
- Item #: 9SIVRE6KXC1304
- Return Policy: soft_9 Return Policy
Refurbished: GIGABYTE B460 AORUS PRO AC LGA 1200 Intel B460 ATX Motherboard with Dual ...
- Memory Standard: Intel Core i9/i7 processors: Support for DDR4 2933/ 2666/ 2400/ 2133 MHz Intel Core i5/i3/ Pentium/Celeron processors: Support for DDR4 2666/ 2400/ 2133 MHz
- Number of Memory Slots: 4x288pin (DDR4)
- Audio Chipset: Realtek ALC1220-VB codec * The back panel line out jack supports DSD audio.
- Brand: GIGABYTE
- CPU Socket Type: LGA 1200
- Chipset: Intel B460
- Form Factor: ATX
- Serial ATA (SATA): 6 x SATA 6Gb/s
- Model #: B460 AORUS PRO AC
- Item #: 9SIVR5CKWK4401
- Return Policy: XianTaoHengCanFuShiYouXianGongSi Return Policy
Refurbished: MSI MPG Z490 GAMING PLUS Intel Z490 LGA 1200 DDR4 128GB ATX ...
- Memory Standard: Support dual-channel DDR4 2133/2200/2400/2666/2800/3000/3200/ 3400/3600/3800/4000MHz memory
- Audio Chipset: Realtek ALC1200-VD1 Codec 7.1-Channel High Definition Audio Supports S/PDIF output
- Brand: MSI
- CPU Socket Type: LGA 1200
- Chipset: Intel Z490
- CPU Type: Supports 10th Gen Intel Core™, 11th Gen Intel Core™, Pentium Gold and Celeron processors for LGA 1200 socket
- Maximum Memory Supported: 128GB
- PCI Slots: 1x PCIe 3.0 x16 slot (from CPU) Support up to PCIe 4.0 for 11th Gen Intel CPU Support up to PCIe 3.0 for 10th Gen Intel CPU 1x PCIe 3.0 x16 slot (from chipset, supports x4 mode) 3x PCIe x1 slots (from chipset)
- Model #: 1211981-1-307
- Item #: 9SIVRE6KWY2969
- Return Policy: soft_9 Return Policy
Refurbished: MSI B150I GAMING PRO Intel B150 LGA 1151 DDR4 32GB Mini-ITX Motherboard
- Memory Standard: Supports dual-channel DDR4 2133MHz memory
- Audio Chipset: Realtek ALC887 Decoder Chip - 7.1 channel high-quality sound effects
- Brand: MSI
- CPU Socket Type: LGA 1151
- Chipset: Intel B150
- CPU Type: 6th Gen Intel Core & trade i3/i5/i7, Intel Pentium/Celeron processors with LGA1151 support
- Maximum Memory Supported: 32GB
- PCI Slots: 1 PCIe 3.0 x16 slot
- Model #: 1211981-1-50
- Item #: 9SIVRE6KWM3381
- Return Policy: soft_9 Return Policy
Refurbished: MSI MAG B560M MORTAR WIFI LGA 1200 Micro ATX Intel Motherboard
- Memory Standard: Supports 1R 2133/ 2666/ 2933 MHz for 10th Gen Intel CPU (by JEDEC & POR) Supports 1R 2133/ 2666/ 2933/ 3200 MHz for 11th Gen Intel CPU (by JEDEC & POR) Max overclocking frequency: 1DPC 1R Max speed up to 5066+ MHz 1DPC 2R Max speed up to 4600+ MHz 2DPC 1R Max speed up to 4266+ MHz 2DPC 2R Max speed up to 4000+ MHz Supports Dual-Channel mode Supports non-ECC, un-buffered memory Supports Intel Extreme Memory Profile (XMP)
- Number of Memory Slots: 4x288pin (DDR4)
- PCI Express x16: 2 x PCI Express x16
- Audio Chipset: Realtek ALC897 Codec Supports S/PDIF output
- Brand: MSI
- CPU Socket Type: LGA 1200
- Chipset: Intel B560
- Form Factor: Micro ATX
- Model #: MAG B560M MORTAR WIF
- Item #: 9SIVSYUKWW7600
- Return Policy: OujinbaihuSHOP Return Policy
Refurbished: MSI MAG B660 TOMAHAWK WIFI DDR4 Intel B660 LGA 1700 DDR4 128GB ATX ...
- Memory Standard: Supports dual-channel DDR4 4800 (OC)/4600 (OC)/4400 (OC)/4266 (OC)/4200 (OC)/4000 (OC)/3800 (OC)/3733 (OC)/3600 (OC)/3466 (OC)/3400 (OC)/3333 (OC)/3200 (OC)/3200 (JEDEC)/2933 (JEDEC)/2666 (JEDEC)/2400 (JEDEC)/2133 (JEDEC) MHz memory
- Audio Chipset: Realtek ALC1220P Codec 7.1-Channel High Definition Audio Supports S/PDIF output
- Brand: MSI
- CPU Socket Type: LGA 1700
- Chipset: Intel B660
- CPU Type: Supports 12th Gen Intel Core™, Pentium Gold and Celeron processors Processor socket LGA1700
- Maximum Memory Supported: 128GB
- PCI Slots: 2x PCIe x16 slots PCI_E1 (From CPU) Support up to PCIe 4.0 PCI_E2 (From B660 chipset) Support up to PCIe 3.0 x4 1x PCIe 3.0 x1 slot (From B660 chipset)
- Model #: 1211981-1-197
- Item #: 9SIVRE6KWY2874
- Return Policy: soft_9 Return Policy
Refurbished: MSI B150M ICAFE Intel B150 LGA 1151 DDR4 32GB Micro ATX Motherboard
- Memory Standard: Supports dual-channel DDR4 2133MHz memory
- Audio Chipset: Realtek ALC887 Decoder Chip 7.1 channel high-quality sound effects
- Brand: MSI
- CPU Socket Type: LGA 1151
- Chipset: Intel B150
- CPU Type: Supports 6th generation LGA1151 architecture Intel Core i3/i5/i7, Intel Pentium, Celeron processors
- Maximum Memory Supported: 32GB
- PCI Slots: 1 PCIe 3.0 x 16 slot 2 PCIe 3.0 x 1 slots
- Model #: 1211981-1-48
- Item #: 9SIVRE6KWM3382
- Return Policy: soft_9 Return Policy
Refurbished: ASUS PRIME Z490-V Intel Z490 1200 LGA ATX M.2 Desktop Motherboard A
- Memory Standard: DDR4
- PCI Express x16: 1
- Brand: ASUS
- Form Factor: ATX
- PCI Express 3.0 x16: 1x PCI Express 3.0 x16
- Maximum Memory Supported: 128GB
- PCI Slots: 1 x PCI Slot
- RJ45: 1 x RJ45
- Model #: PRIME Z490-V MR A
- Item #: 9SIVS10KUH1456
- Return Policy: Yongrui electronic Commerce Co., Limited Return Policy
Refurbished: GIGABYTE Z790 AORUS ELITE X AX Intel LGA 1700 Socket supports 13th , 14th ...
- Memory Standard: Support for DDR5 8266(O.C) / 8200(O.C) / 8000(O.C) / 7950(O.C) / 7900(O.C) / 7800(O.C) / 7600(O.C.) / 7400(O.C.) / 7200(O.C.) / 7000(O.C.) / 6800(O.C.) / 6600(O.C.) / 6400(O.C.) / 6200(O.C.) / 6000(O.C.) / 5800(O.C.) / 5600(O.C.) / 5400(O.C.) / 5200(O.C.) / 4800 / 4000 MT/s memory modules
- Number of Memory Slots: 4x288pin (DDR5)
- Audio Chipset: Realtek ALC1220-VB CODEC * The back panel line out jack supports DSD audio. High Definition Audio 2/4/5.1/7.1-channel * You can change the functionality of an audio jack using the audio software. To configure 7.1-channel audio, access the audio software for audio settings. Support for S/PDIF Out
- Brand: GIGABYTE
- CPU Socket Type: LGA 1700
- Chipset: Intel Z790 Express Chipset
- Form Factor: ATX
- Serial ATA (SATA): 6 x SATA 6Gb/s
- Model #: Z790 AORUS ELITE X AX
- Item #: 9SIVMRNKWT9679
- Return Policy: dnajknwd Return Policy
Refurbished: MSI MPG Z490 GAMING EDGE WIFI LGA 1200 Intel Z490 ATX Intel Motherboard
- Memory Standard: DDR4 5000(OC) / 4800(OC) / 4600(OC) / 4533(OC) / 4400(OC) / 4300(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3400(OC) / 3333(OC) / 3300(OC) / 3200(OC) / 3000(OC) / 2933(JEDEC) / 2666(JEDEC) / 2400(JEDEC) / 2133(JEDEC)
- Number of Memory Slots: 4x288pin (DDR4)
- Audio Chipset: Realtek ALC1200-VD1
- Brand: MSI
- CPU Socket Type: LGA 1200
- Chipset: Intel Z490
- Form Factor: ATX
- Serial ATA (SATA): 6 x SATA 6Gb/s* * SATA2 will be unavailable when installing M.2 SATA SSD in the M2_1 slot.
- Model #: Z490 GAMING EDG WIFI
- Item #: 9SIVMRNKWT8889
- Return Policy: dnajknwd Return Policy
Refurbished: MSI MEG Z590 GODLIKE Intel Z590 LGA 1200 DDR4 128GB E-ATX Motherboard
- Memory Standard: Support dual channel DDR4 5600 (OC)/5333 (OC)/5200 (OC)/5000 (OC)/4800 (OC)/4600 (OC)/4533 (OC)/4400 (OC)/4300 (OC)/4266 (OC)/4200 (OC)/4133 (OC)/4000 (OC)/3866 (OC)/3733 (OC)/3600 (OC)/3466 (OC)/3400 (OC)/3333 (OC)/3300 (OC)/3200 (OC)/3000 (OC)/2933 (JEDEC)/2666 (JEDEC)/2400 (JEDEC)/2133 (JEDEC) MHz memory
- Audio Chipset: Realtek ALC4082 Codec + ESS ES9218PQ Combo DAC/HPA 7.1-Channel High Definition Audio Supports S/PDIF output
- Brand: MSI
- CPU Socket Type: LGA 1200
- Chipset: Intel Z590
- CPU Type: Supports 10th Gen Intel Core™ Processors, 11th Gen Intel Core™ Processors, Pentium Gold and Celeron processors 1 Processor socket LGA1200
- Maximum Memory Supported: 128GB
- PCI Slots: 3x PCIe x16 slots Support x16/x0/x4, x8/x8/x4, x8/x4+x4/x4, x8+x8/x0/x4, x8+(x4+x4)/x0/x4 PCI_E1 & PCI_E2 slots...
- Model #: 1211981-1-323
- Item #: 9SIVRE6KWM3492
- Return Policy: soft_9 Return Policy
Refurbished: MSI MAG Z390 TOMAHAWK LGA 1151 (300 Series) Intel Z390 HDMI SATA 6Gbs ...
- Memory Standard: DDR4 4400(OC)/ 4300(OC)/ 4266(OC)/ 4200(OC)/ 4133(OC)/ 4000(OC)/ 3866(OC)/ 3733(OC)/ 3600(OC)/ 3466(OC)/ 3400(OC)/ 3333(OC)/ 3300(OC)/ 3200(OC)/ 3000(OC)/ 2800(OC)/ 2666/ 2400/ 2133
- Number of Memory Slots: 4x288pin (DDR4)
- Audio Chipset: Realtek ALC892
- Brand: MSI
- Model: MAG Z390 TOMAHAWK
- CPU Socket Type: LGA 1151 (300 Series)
- Chipset: Intel Z390
- Form Factor: ATX
- Model #: MAG Z390 TOMAHAWK
- Item #: 9SIVMRNKWT9058
- Return Policy: dnajknwd Return Policy
Refurbished: ASUS Prime H770-PLUS D4 Intel H770( 13th and 12th Gen) LGA 1700 ATX ...
- Memory Standard: DDR4 3200
- Number of Memory Slots: 4x288pin (DDR4)
- Audio Chipset: Realtek 7.1 Surround Sound High Definition Audio CODEC* - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - Premium audio capacitors - Dedicated audio PCB layers * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
- Brand: ASUS
- CPU Socket Type: LGA 1700
- Chipset: Intel H770
- Form Factor: ATX
- Serial ATA (SATA): 4 x SATA 6Gb/s
- Model #: PRIME H770-PLUS D4
- Item #: 9SIVG8GKWS9077
- Return Policy: roboshine Return Policy
Refurbished: TUF Z390-PLUS GAMING (WI-FI) Intel Z390 1151 LGA ATX Desktop ...
- Brand: ASUS
- CPU Socket Type: LGA 1151
- Chipset: Intel Z390
- Form Factor: ATX
- CPU Type: Xeon / Core i7/i5/i3 / Pentium / Celeron (LGA1151)
- Supported CPU Technologies: Turbo Boost Technology 2.0
- Series: TUF
- Model #: TUF Z390-PLUS GAMING
- Item #: 9SIVG8GKWN9594
- Return Policy: roboshine Return Policy
Refurbished: GIGABYTE H370 HD3 LGA 1151 (300 Series) Intel H370 HDMI SATA 6Gb/s USB ...
- Model #: H370 HD3
- Item #: 9SIVS10KUP5917
- Return Policy: Yongrui electronic Commerce Co., Limited Return Policy
Refurbished: ASUS Sabertooth X79 LGA 2011 Intel X79 USB 3.0 ATX Intel Motherboard
- Memory Standard: DDR3 1866/1600/1333/1066
- Number of Memory Slots: 8x240pin
- Audio Chipset: Realtek ALC892
- Brand: ASUS
- CPU Socket Type: LGA 2011
- Chipset: Intel X79
- Form Factor: ATX
- Serial ATA (SATA): 4 x SATA 6Gb/s
- Model #: SABERTOOTH X79
- Item #: 9SIVNP2KJD5556
- Return Policy: xujiajia Return Policy
Refurbished: MSI PRO B760M-A DDR4 II Intel B760 LGA 1700 DDR5 128GB Micro ATX ...
- Memory Standard: Support 7800 + (OC)/7600 (OC)/7400 (OC)/7200 (OC)/7000 (OC)/6800 (OC)/6600 (OC)/6400 (OC)/6200 (OC)/6000 (OC)/5800 (OC)/5600 (JEDEC)/5400 (JEDEC)/5200 (JEDEC)/5000 (JEDEC)/4800 (JEDEC) MHz
- Audio Chipset: Realtek ALC897 Codec 7.1-Channel High Definition Audio
- Brand: MSI
- CPU Socket Type: LGA 1700
- Chipset: Intel B760
- CPU Type: Support Intel Core™ 14th/ 13th/ 12th Gen Processors, Intel Pentium Gold and Celeron Processors LGA 1700
- Maximum Memory Supported: 128GB
- PCI Slots: 2X PCI-E x16 slots (quantity) 1X PCI-E x1 slot (quantity) PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU) PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset) PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)
- Model #: 1211981-1-205
- Item #: 9SIVRE6KWY2896
- Return Policy: soft_9 Return Policy
Refurbished: MSI PRO H610M-G DDR4 Intel H610 LGA 1700 DDR4 64GB Micro ATX ...
- Memory Standard: 2 DDR4 slots, total support up to 64GB Supports 1R 2133/2666/2933/3200 MHz (by JEDEC & POR) Supports dual channel mode Support non-ECC, unbuffered memory
- Audio Chipset: Realtek ALC892/ ALC897 Codec 7.1-Channel High Definition Audio
- Brand: MSI
- CPU Socket Type: LGA 1700
- Chipset: Intel H610
- CPU Type: Supports 12th Gen Intel Core™ Processors, Pentium Gold and Celeron Processors Processor socket LGA1700
- Maximum Memory Supported: 64GB
- PCI Slots: 1x PCIe x16 slot (From CPU) Supports up to PCIe 4.0 x16 1x PCIe x1 slot Supports PCIe 3.0 x1 1x M.2 slot with E-key for PCIe WiFi module only (M2_ WIFI1)
- Model #: 1211981-1-186
- Item #: 9SIVRE6KX15236
- Return Policy: soft_9 Return Policy
Intel Motherboard Questions and Answers
Introduction
A compatible Intel® motherboard is an essential component when assembling a desktop with an Intel processor. The motherboard determines what type of processor you can use, how many data storage drives you can install, the maximum amount of system memory supported, and more. To help you find the ideal Intel motherboard for your desktop build, NeweggBusiness answers several common questions about motherboards.
Questions
What is a motherboard chipset?
A motherboard chipset is a collection of components on the motherboard designed to integrate the processor with the rest of the system hardware. The chipset has a major impact on overall system performance and device compatibility. For each family of Intel processors, a different chipset is typically used. When shopping for an Intel motherboard, you will have to ensure that its chipset is compatible with the processor you intend to use.
What does CPU socket type mean?
The CPU socket is the component on the motherboard that holds and locks the processor in place. In order for a processor to be installed onto a motherboard, they both must have the same socket type. For example, an LGA 1150 processor can only be installed onto an Intel motherboard with a LGA 1150 socket.
However, having the same socket type does not necessarily mean that the processor and motherboard are compatible. Sometimes, multiple generations of processors can have the same socket type but use different chipsets.
What is the difference between PCI and PCIe®?
Both PCI and PCIe are computer expansion card standards that are used by devices such as video cards, sound cards, network adapters, and more. PCIe is a newer standard designed to replace PCI and is not backwards compatible. It is capable of faster data transfer rates, which allows for better performance from expansion cards.
Many ATX form factor Intel motherboards will have a combination of both PCI and PCIe expansion slots. Unfortunately, some motherboards—mainly small form factor motherboards such as Mini ITX—only have one PCIe slot due to space limitations.
What is BIOS?
It is an acronym that stands for Basic Input/Output System and is the very first program that starts when a computer is powered on. Stored on the motherboard, BIOS is the intermediary that interconnects the components and launches the operating system. The interface for BIOS is rather limited because it is mainly text based with a small color palette. Many motherboards include BIOS, though there is now a transition to the newer Unified Extensible Firmware Interface (UEFI).
What is UEFI?
Like BIOS, UEFI is an intermediary for the main operating system and the hardware. It is designed to replace BIOS as the standard operating system included on AMD and Intel motherboards. Compared to BIOS, UEFI is much more user friendly and secure, supports larger hard drives, reduces startup times, and more. Many new Intel motherboards now include UEFI instead of BIOS, though such motherboards may sometimes be advertised as having UEFI BIOS.

