One of the many Digibox’s Pace produced over the years, and one of the first to have the tuner integrated on the mainboard, previous models had the tuner enclosed on a separate metal box fixed onto the board, or as a ZIF style socket module.

Another box from the same era was the PaceDi4000N for ntl, although this is a cable receiver you can see some similarities in the design.

Its quite a minimal clean design compared to the other boxes Pace have produced, like the Di4001

Back to the 2500S5, you can see the CPU of the box

The main, and only processor STi5512SWE. This chip incorporates the CPU (ST20) running at 60Mhz, MPEG2 decoder and graphics processor, basically a receiver on a chip. I’m not sure how it compares to other digibox’s of the era in terms of speed, considering this box was made in 2002.

ST processors were stupidly popular in many satellite receivers, and this one seems to be an NDS variant

Not sure what this chip does, maybe I/O for the RS232 port?

The unused PCMCIA slot

Flash memory chips (right) that store the EPG software and operating system. Each chip is 2Mb for a total of 4Mb Flash. There are two unpopulated banks for a potential of 8Mb. The chip at the top left, above the Omega chip is part of the RAM.

View of the dual card slots, the bottom is for the viewing card, whilst the top is for the interactive card.

Appears to be the modem used for the Digibox’s return path. This allows for the digibox to communicate back to Sky for box office events and interactive. Unsure of the port on the right

The front of the box with the panel removed, showing the location of the remote sensor