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UKcomputerparts.com
Sells all computer components and peripherals.
http://www.ukcomputerparts.com

Unicom Computer Services
Provides computer hardware such as modems, cases, sound cards, video, keyboard, mouse and cpus, also complete systems available.
http://www.unicom-pc.com

Unicom-computer.com
Computer hardware and software sold wholesale.
http://www.unicom-computer.com

UniLink
Authorized value-added reseller of Unisys equipment.
http://www.unilinkinc.com/

United Electronic Services
Retailer of new, used and refurbished bar code scanners and printers, POS systems, hand held computers and portable data terminals, parts and accessories.
http://www.uesonline.com

United Micro, Inc
Specializing in computers, desktops, motherboards and components.
http://www.unitedmicro.com/

Universal Computer Rental
Computer and audio/visual rentals, PC and Mac accessories.
http://www.ucrental.com/

Universal Computers
Sells desktop and laptop computers, peripherals and accessories.
http://www.universalcomputers.com/

Unreal Computer
Richland, Washington based retailer of computer systems and components.
http://www.unrealcomputer.com

Upgrade Source
Computer hardware upgrades.
http://www.upgradesource.com

USA Systems
Offers customized computer systems, computer parts and peripherals.
http://www.usa-sys.com/

USB 2.0 Online
Sells USB products which include hard drive enclosures, CD-RW drives, PCI cards, hubs, and flash readers.
http://www.usb-2-0.com

USBdiscount.com
Sells USB related hardware products.
http://www.usbdiscount.com/

USBMax
Provides USB products including adapters, drives, enclosures, hard drive, keyboards and mice.
http://www.usbmax.com/

UserEasy Computer Systems
Configures custom-built computers, notebooks and servers.
http://www.usereasy.com