Juniper MX240 Hardware Manual page 166

You can install the MX-SPC3 in any of the slots that are not reserved for Switch Control Board (SCB). If a
slot is not occupied by a card, you must install a blank panel to shield the empty slot and to allow cooling
air to circulate properly through the device.
Figure 42: MX-SPC3 Services Card
JNP-SPC3
Software release
Description
Hardware features
Supported Slots
Compatibility
Junos OS Release 19.3R2 and later
Services Processing Card (SPC) with two SPUs of 256 GB memory.
Power requirement: 650 W maximum
Weight: Approximately 18 lb (8.3 kg)
Two 10–Gigabit Ethernet small form-factor pluggable plus (SFP+) chassis cluster control
ports for connecting multiple devices into a redundant chassis cluster.
Fabric interfaces
One Gigabit Ethernet switch that provides control connectivity to the Routing Engine.
Two interfaces from the SCBs that enable the boards to be powered on and controlled.
Physical SPC connectors
Midplane connectors and power circuitry
Each SPU includes:
Two 2.3-GHz CPUs
One Crypto Engine
128 GB memory
Two 128 GB solid state-drives (SSDs).
LEDs on the faceplate that indicate the SPC and SPU status.
MX240–Any slot, except the bottom slot 0 which is reserved for SCB/RE.
MX480–Any slot, except the bottom slots 0 or 1 which are reserved for SCB/RE.
MX960–Any slot, except slot 11, and slots 0 or 1 which are reserved for SCB/RE.
The MX-SPC3 services card is compatible end-to-end with the following MX Series services
cards and Routing Engines:
MX Enhanced Switch Control Board: SCBE, SCBE2
MS-MPC: MX-MPC3E-3D, MPC5E-40G10G, MPC5E-100G10G, MPC5EQ-40G10G,
MPC5EQ-100G10G
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