All TGCS system units, and some I/O devices, are identified by a 4-digit machine type & 3-digit model number. Collectively this is known at machine type/model, or MTM.
The MTM & machine serial number can be found on a sticker on the front or side of each system unit. Note that serial numbers are not globally unique, but they are unique across machine types.
Not all I/O devices & peripherals have machine types, some are just listed as feature codes of the original system unit.
Some items (mainly self-checkout & self-service) have 2 MTMs, one for the system unit and one for the self-checkout/self-service cabinetry and hardware.
Note that End of Service (EoS) and End of Engineering Support (EoES) are not the same thing; EoS is when we stop on-site service of the machine, EoES is when we stop doing updates (BIOS, firmware, etc) for it. Some system units and I/O devices have already reach EoES status.
System units
Any MTM not listed above is considered unsupported by L2/PE teams.
I/O Devices
For I/O devices that do not have an MTM you can find support on the I/O Devices support page.
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