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A-4 SPECIFICATIONS
Table A-1 50-Pin Cable Pinouts and Port Assignments
Hub
Port #
Hub
Pin #
Hub
Function/
Polarity
Transceiver
Function
/Polarity
Hub
Port
#
Hub
Pin #
Hub
Function/
Polarity
Transceiver
Function
/Polarity
Port 1 26 RX, + TX, + (1) 7 38 RX, + TX, + (1)
Port 1 1 RX, - TX, - (2) 7 13 RX, - TX, - (2)
Port 1 27 TX, + RX, + (3) 7 39 TX, + RX, + (3)
Port 1 2 TX, - RX, - (6) 7 14 TX, - RX, - (6)
Port 2 28 RX, + TX, + (1) 8 40 RX, + TX, + (1)
Port 2 3 RX, - TX, - (2) 8 15 RX, - TX, - (2)
Port 2 29 TX, + RX, + (3) 8 41 TX, + RX, + (3)
Port 2 4 TX, - RX, - (6) 8 16 TX, - RX, - (6)
Port 3 30 RX, + TX, + (1) 9 42 RX, + TX, + (1)
Port 3 5 RX, - TX, - (2) 9 17 RX, - TX, - (2)
Port 3 31 TX, + RX, + (3) 9 43 TX, + RX, + (3)
Port 3 6 TX, - RX, - (6) 9 18 TX, - RX, - (6)
Port 4 32 RX, + TX, + (1) 10 44 RX, + TX, + (1)
Port 4 7 RX, - TX, - (2) 10 19 RX, - TX, - (2)
Port 4 33 TX, + RX, + (3) 10 45 TX, + RX, + (3)
Port 4 8 TX, - RX, - (6) 10 20 TX, - RX, - (6)
Port 5 34 RX, + TX, + (1) 11 46 RX, + TX, + (1)
Port 5 9 RX, - TX, - (2) 11 21 RX, - TX, - (2)
Port 5 35 TX, + RX, + (3) 11 47 TX, + RX, + (3)
Port 5 10 TX, - RX, - (6) Port
11
22 TX, - RX, - (6)
Port 6 36 RX, + TX, + (1) Port
12
48 RX, + TX, + (1)
Port 6 11 RX, - TX, - (2) Port
12
23 RX, - TX, - (2)
Port 6 37 TX, + RX, + (3) Port
12
49 TX, + RX, + (3)
Port 6 12 TX, - RX, - (6) Port
12
24 TX, - RX, - (6)
50 Not Used Not Used
25 Not Used Not Used