USB 2.0 4 Port Peripheral Sharing Switch US224 ATEN, USB 2.0 compliant, support Windows, Linux ,Mac and Sun, Overcurrent protection, Hot pluggable, UK #1 KVM Market Leader - PC Maestro
4-Port USB 2.0 Cat 5 Extender (up to 100m) - UEH4002, ATEN Extenders | ATEN U.S.A.
Aten 2-port USB 2.0 share Hub for 4 computers
Amazon.com: ATEN UEH4002A 4-Port USB 2.0 Cat 5 Extender (up to 100m) : Electronics
Amazon.com: Aten Corp 4 User 2 Port USB Hub (US224) : Electronics