Serial Adapter 4 port RS232 Serial DB9 COM to USB 2.0 Adapter Card Universal Serial Bus Industrial grade for POS system
Become a NeweggBusiness Insider
Sign up to receive exclusive offers in your inbox.
See Current E-Blast Promotion
Who We Are
Who We Serve
Customer Service
B2B Marketplace
Newegg Logistics
© 2000-2026 Newegg Business Inc. All rights reserved.
Policy & Agreement | Privacy Policy | CA Transparency in Supply Chains Act | Cookie Preferences