User guide

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2-7
Compaq Netelligent 1009B 10Base-T Hub User Guide
Writer:
Chris Seiter
Project:
Hardware Description
Comments:
File Name:
1009B_2.DOC
Last Saved On:
6/26/97 2:18 PM
UPLINK Port
You can use the MDI UPLINK port to expand the network by connecting the
hub to another 1009B or compatible hub using straight-through twisted-pair cable.
NOTE
: If you use the UPLINK port, you cannot use RJ-45 Port 8.
You can also uplink to another hub by running straight-through twisted-pair
cabling from any station port on the 1009B hub to a crossover port on another
1009B or compatible hub. However, if you must connect to another hub via
station ports at both ends of the cable, use crossover cabling.
Power Connector
The power adapter plugs into the hub’s power connector and a main power
source that provides 100V, 120V, 220-230V, or 240V at 50 to 60Hz.
NOTE
: Some types of adapters have a ferrite bead attached to the power cable to
reduce interference caused by electromagnetic radiation. For best results, wrap the
cable around the clamp-on ferrite bead to create a single loop as close as possible to
the adaptor jack.