Cisco Cisco IOS Software Release 12.2(8)YL

 lists the number of processor cards supported by a Cisco ICS 7750.

You can upgrade MRP and ASI cards as follows:

Memory. MRP and ASI cards ship with 64 MB of dynamic RAM (DRAM). You can upgrade MRP 
and ASI card memory to 80 MB, 96, or 128 MB by installing a dual in-line memory module (DIMM) 
in the card DIMM slot. 

Voice and data processing power. VICs, VWICs, and FXS modules installed in MRP or ASI cards 
might require additional digital signal processors (DSPs) for processing heavier volumes of voice 
traffic. You can install Packet Voice/Data Modules (PVDMs) in one or both of the card PVDM slots 
to give MRP and ASI cards more processing power.

See 

 for instructions on how to upgrade ASI and MRP cards.

 provides information about the modules that you can install in ASI and MRP cards 

System alarm 
processor (SAP)

A module that monitors the status of the chassis, power supply modules, 
and fans, and feeds real-time data to the system processing engines. The 
SAP card delivers its data to the SPE running System Manager.

Two COM ports

One console port

System switch 
processor (SSP)

An Ethernet switch that passes data between all system cards and to any 
other Ethernet switches connected to the system.

Two Ethernet 10/100 ports

1.

System software release 2.1.0 or later is supported only on SPE 310s.

SAP

1

1

SSP

1

1

MRP

0

5

ASI 0

5

SPE 310

1

5

200W power supply module

1

2

 16-MB SDRAM DIMM

MEM-MRP-16D=

 32-MB SDRAM DIMM

MEM-MRP-32D=

 64-MB SDRAM DIMM

MEM-MRP-64D=

 4-channel packet voice/fax data DSP module

PVDM-256K-4=