HP J9981A Installation And Getting Started Guide

Index-3
SFPs
slot, location on switch … 1-2
slots for SFPs
location on switch … 1-2
specifications
acoustic … A-2
electrical … A-1–A-2
environmental … A-2
physical … A-1
safety … A-2
straight-through cable
pin-out … A-9, A-11
switch
connecting to a power source … 2-13
description … 1-1
electrical specifications … A-1–A-2
environmental specifications … A-2
front panel description … 1-2
included parts … 2-1
mounting in a rack or cabinet … 2-9, 2-11
mounting on horizontal surface … 2-12
physical specifications … A-1
switch operation
verifying after installation … 2-6
T
tips for troubleshooting … 4-1
troubleshooting … 4-1
basic tips … 4-1
common network problems … 4-1
twisted-pair cable
cross-over cable pin-out … A-10
pin-outs … A-7, A-9, A-11
straight-through cable pin-out … A-9, A-11
switch-to-computer connection … A-9, A-11
switch-to-switch or hub connection … A-10
twisted-pair ports
HP Auto-MDIX feature … A-7
W
wiring rules for twisted-pair cables … A-7

HP J9981A Specifications

General

Management	Managed
PoE	No
Jumbo Frame Support	Yes
Form Factor	Rack-mountable
Model	J9981A
Layer	Layer 2
Weight	2.5 kg
MAC Address Table Size	16, 000 entries
Power Supply	Internal
Operating Temperature	0°C to 40°C
Ports	24 x 10/100/1000BASE-T ports 4 x SFP+ ports
Humidity	15% to 95% non-condensing