Notes:
VSETT branded vs "Aftermarket"
The VSETT NFC was initially adopted on VSETT scooters and a non-VSETT branded "aftermarket" variants are appearing on newer generation Unicool T (including -DDM) series and VDM-10 such as Dragon X9 and Raptor models (post 2022). The genuine VSETT factory spare product is shown below right hand side (this item).
An alternative aftermarket "copy / knock-off" version is shown on the left hand side. It differs with branding and cosmetic look and is introduced on non-VSETT branded scooters. It has same nameplate marking NFC 053.1 suggesting signalling and software is consistent with the VSETT product. It has two rather than four screws on the bracket as the NFC cable routes internally. The trigger at the rear is also somewhat more exposed. Choose this option if you prefer this slightly cheaper version, it is identical to the type on Dragon X9 scooters (T9) and the post 2020 Dragon Raptor's that feature NFC. It is supplied with two "SPLATCH" branded rectangular cards. The aftermarket is not as common as the genuine VSETT and is not significantly lower in cost, there are no other known differences. eSN recommends the VSETT branded unit over the aftermarket.
Notes for those interested in the VSETT Upgraded Display Throttle that accompanies the VSETT Centre Display Upgraded Display System (centre mount large rectangular display).
These are compatible with VSETT systems, but not the VSETT Mini and until recently the VSETT 8 models (due to bracket). They are marketed to not support Unicool T (including DDM) systems such as Zero makes and likely ODM variants of VDM-10 such as Dragon Raptor. They are also somewhat a VSETT exclusive, to accompany VSETT makes. Investigation suggests these upgraded units "will not fit" (physically) but will likely work and be interoperable with systems that use the VSETT NFC and QS-S4 systems. They unit is a pricey option for what may be considered a "bell and whistle" uplift, much being cosmetic (usually it's eyes forward!). eSN can special order this display with throttle however they are not popular given cost of $239 - Ride Electric may have stocks of these for your VSETT and/or rolling the dice on other models.
The VSETT Upgraded Display Throttle (with buttons) interconnects to the display via a high density 8-pin connector as illustrated by Steven Chan. It suggests a 5V line).
Here is the pin-out and the PCB of the center display. PCB adopted from Kevin Graehl