3Com MSR 20, MSR 30 manual Following table describes the LEDs on the main board, Removing Vcpm card

232CHAPTER 5: ESM/VCPM MODULE

Interface Attributes

Table 175 Interface attributes of the VCPM module

Attribute	Description
Connector	Double-edge connector
Interface type	PCI 2.2, EHPI
Data transmission rate	Operating rate for PCI bus: 33 MHz/66
	MHz
	Maximum bandwidth: 264 Mbps
	BURST transmission: Up to 1 KB of
	data can be transmitted once and the
	maximum number of bytes
	transmitted can be configured.

Interface LEDs There is no LED on the VCPM card and display of the status of the module is implemented through the VCPM interface LED on the main board of the router.

The following table describes the LEDs on the main board:

Table 176 Description on the LEDs

LED	Description
VCPMx	Green: VCPM card is in the slot and is operating normally.
	Yellow: VCPM card is in the slot but cannot be accessed by the router.
Note:

X means the slot number VCPM card LED is on.

Installing/Removing VCPM card should be installed on the main board of the MSR 30 router and on VCPM Card the VCPM slot on the MSCA card of MSR 30 router. The board that provides

VCPM slots is referred to hereafter as mother board. Suppose the mother board is uninstalled and put on the workbench.

Removing VCPM card

Follow these steps to uninstall the VCPM card:

Step 1: Remove the three fastening screws on the VCPM card.

Step 2: Remove the VCPM card from the mother board. Do not overexert when removing the VCPM card because the connector of the daughter board is still on the mother board.

Step 3: If no SNDE card is to be installed, remove the three metal standoffs

Installing VCPM card

Follow these steps to install VCPM card:

Step 1: Confirm the correct position of the VCPM card on the mother board.

Step 2: Fasten the three metal standoffs on the mother board.