USB2.0/3.0 2 Port / 4 Port Manual or Auto Switch
UMS-202-P / UMS-202-F
2 Port USB2.0 to RS-232 Manual Switch
UMS-212
2 Port USB2.0 to RS-232 Auto Switch
UMS-402-P / UMS-402-F
4 Port USB2.0 to RS-232 Manual Switch
UMS-412
4 Port USB2.0 to RS-232 Auto Switch
 Industrial USB2.0  to Fast ports RS-232  (OEM For Custom)

AUM420-F

USB to 2 Port RS-232 & HUB

AUM440-F

USB to 4 Port RS-232 & HUB

AUM480-F

USB to 8 Port RS-232 & HUB

AUM416-F

USB to 16 Port RS-232 & HUB