The serial pass-thru module has six serial ports that you can use to directly attach a four-wire serial RJ-45 connector to each of the blade servers in the BladeCenter S chassis. If you use the serial pass-thru module, it must be installed in the serial pass-thru module bay.
Note: See the documentation for the blade server that you are using
to ensure that it supports this type of serial access.
The connectors are numbered 1 through 6, from top to bottom, and correspond to blade servers in blade server bays 1 through 6.
Serial pass-thru connector pinout
There are eight pins on each RJ-45 port, numbered 1 through 8, from bottom to top.
| Contact (pin number) | Signal name | Signal direction |
|---|---|---|
| 1 | RTS (Request to send) | Output from blade server |
| 2 | Not used | n/a |
| 3 | RXD (Receive data) | Input to blade server |
| 4 | GND (Ground) | n/a |
| 5 | Not used | n/a |
| 6 | TXD (Transfer data) | Output from blade server |
| 7 | Not used | n/a |
| 8 | CTS (Clear to send) | Input to blade server |
Note: The serial pass-thru module uses
the DTE convention.