IBM RS/6000 44P - Manual (Page 22)

Rear View
1 Serial Number Label: For machine identification.
2 and 3 9-Pin Serial Ports ( 1 2 ) : For a TTY terminal, modem, or other serial
devices.
4 Keylock: For security.
5 Security Bolt: Optional security measure.
6 Adapter Slots (6): For adding PCI adapters.
7 Empty Slot: This slot is not used.
8 Ethernet Connector ( ) : For attaching your computer to an Ethernet/Twisted pair
connection through a 10baseT connector.
9 Headphones: For connecting headphones.
10 Microphone: For connecting a microphone.
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4 44P Series Model 170 User’s Guide