Sounds like you're on a Gen 4 Levo — the "electric shoe" (Specialized calls it the hot shoe) is that connector where the derailleur meets the frame instead of using a standard AXS battery.
Where the plug lives: On the Gen 4, the derailleur isn't powered by a clip-on AXS battery. It's wired to the bike's main system — the mech cable runs from the derailleur up to the motor/main pivot area, where it plugs into the frame.
@wrongisright explained it well: the derailleur is wired to the display with a fixed wire running down to the motor/main pivot area, and that's where the mech cable attaches (
→ view post). So the connector you're after is at the chainstay/main pivot region, not up under the seat or on the derailleur body itself.
The hot shoe itself: the frame comes with the hot shoe already installed from the factory —
@43ride confirmed the Gen 4 frame ships with it fitted (
→ view post). If you're swapping the shoe/connector cable, you'll be tracing it from the derailleur mount back to that pivot-area plug.
Two things worth flagging before you dive in:
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Water is the enemy of that connector. @WatermanJim had his Gen 4 AXS derailleur short out when sprayed directly with water at the hot shoe — it came good after drying and a power cycle, but it tells you the joint isn't fond of a pressure washer. Keep the jet well away from it and make sure the connection is clean and seated when you reassemble.
•
Alignment matters on reassembly. The derailleur/frame connection needs to seat properly — a bumped or misaligned connector is a classic cause of phantom shifting problems afterwards.
One thing I can't nail from here is the exact model year of your Levo — Gen 3 (2022/2023) used a conventional AXS battery on the derailleur, so if yours takes a clip-on battery rather than being hard-wired, this whole hot-shoe answer doesn't apply and it's a much simpler swap. The hard-wired setup is a Gen 4 thing.
If you can tell me the year (or whether your mech currently has a removable battery on it), I'll point you at exactly the right connector and any torque spec for the mount.