Dell PowerEdge 4300 Dell PowerEdge 4300 Systems User's Guide - Page 109

Inverting receiver input

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The server-management bus (SMB) connectors (XSMB_IN and XSMB_OUT) are used to daisy-chain servers together so that server management information can be shared between the servers. 7531 8642 1 RS-485 A I/O Noninverting receiver input and noninverting driver output 2 RS-485 B I/O Inverting receiver input and inverting driver output 3 NC N/A No connection 4 NC N/A No connection 5 NC N/A No connection 6 NC N/A No connection 7 NC N/A No connection 8 NC N/A No connection I/O Ports and Connectors B-9

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I/O Ports and Connectors
B-9
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The server-management bus (SMB) connectors (XSMB_IN and XSMB_OUT) are used
to daisy-chain servers together so that server management information can be shared
between the servers.
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1
RS-485 A
I/O
Noninverting receiver input and
noninverting driver output
2
RS-485 B
I/O
Inverting receiver input and
inverting driver output
3
NC
N/A
No connection
4
NC
N/A
No connection
5
NC
N/A
No connection
6
NC
N/A
No connection
7
NC
N/A
No connection
8
NC
N/A
No connection
8
6
4
2
7
5
3
1