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st16c554
- 1to4 usb hub μPD720114 ET-0191A 4端口自供电集线器原理图-1to4 usb hub μPD720114 ET-0191A 4-port self-powered hub schematic
uPD720114ET-0191A
- 1to4 usb hub μPD720114 ET-0191A 4端口自供电集线器原理图-1to4 usb hub μPD720114 ET-0191A 4-port self-powered hub schematic
UPD720114_UserManual
- NEC的1to4 usb hub芯片uPD720114用户手册(网上公认的最好的usb hub芯片)-NEC' s 1to4 usb hub chip uPD720114 user' s manual (on-line recognized the best usb hub chip)