Cooling System; Ports; Console Port; 10/100/1000Base-T Ethernet Port - 3Com Baseline Switch 2900 Series Getting Started Manual

Only the RPS recommended by 3Com can be used for the 3Com Baseline Switch 2928-HPWR Plus.
The –48 VDC power supply in the equipment room cannot be used directly. Otherwise, the device may
be damaged.

Cooling System

The 3Com Baseline Switch 2928-HPWR Plus is equipped with six fans for heat dissipation.

Ports

Console Port

Each 3Com Baseline Switch 2900 Family provides one console port on the front panel.
describes the console port specifications.
Table 1-2 Console port specifications
Item
Connector type
Compliant standard
Transmission baud
rate
Service

10/100/1000Base-T Ethernet Port

Each 3Com Baseline Switch 2900 Family provides 10/100/1000Base-T Ethernet ports on its front panel.
Quantity of Ethernet ports varies with the device model, see
Table 1-3 describes the specifications of the 10/100/1000Base-T Ethernet ports.
Table 1-3 3Com Baseline Switch 2900 Family 10/100/1000Base-T Ethernet port specifications
Connector type
Interface speed and operating mode
Max transmission distance
Transmission medium
Standard
RJ-45
EIA/TIA-232
9600 bps to 115200 bps (defaulting to 38400 bps)
It can be connected to an ASCII terminal.
It can be connected to a serial port of a local or remote (through a pair of
modems) PC running terminal emulation program.
Item
Specification
Table 1-1
Specification
RJ-45
10 Mbps, full duplex
100 Mbps, full duplex
1000 Mbps, full duplex
MDI/MDI-X, auto-sensing
100 m (328.1 ft.)
Category-5 unshielded twisted pair cable
IEEE 802.3i, IEEE 802.3u, IEEE 802.3ab
1-8
Table 1-2
for details.