[j-nsp] Jumbo frames on 4 port gig PIC

[daniel]

 I was looking at the M-series PIC information. Below is the M-40e
information:

http://www.juniper.net/techpubs/hardware/m40e/m40e-picguide/frameset.htm

Note under Hardware Features it says:

Large MTUs of up to 9192 bytes
In addition, the 4-port Gigabit Ethernet PIC supports the following
features:
Maximum MTU of 4500 bytes

Does this mean that the 1-Gbps PIC supports Jumbo and the 4 port does not?
Is this true across the board?

Thanks