Toshiba Magnia 550d - Manual (Page 71)

Connecting Hardware Devices
CPU module
54
CPU module
The server is classified into 3 models. Each model differs in their
clock speed; 1 GHz, 1.13 GHz, 1.26 GHz, 1.4 GHz.
If you want to upgrade your server to a dual CPU configuration,
the additional CPU module must have the same clock speed as the
original module. The frequency of both modules must match. A
socket (CPU2) for installing an additional CPU module is
available at the upper right side of the standard CPU socket
(CPU1).
CPU sockets
CPU2
J15 (CPU 2 fan connector)
CPU 1 (Standard)
J13 (CPU 1 fan connector)