What an edge-connector package is
The gold fingers are a row of gold-plated contacts along the PCB edge, the same idea as a memory stick or an M.2 drive. The module plugs into a matching socket on the carrier, and power, HDMI differential pairs, Ethernet, buttons and audio all pass through those contacts. Nothing is soldered between module and carrier; a screw at the far end holds the module down.
Compared with a solder-down module
A solder-down module goes through reflow with the carrier and is hard to remove afterwards. An edge-connector module is plugged in, so the production line builds the carrier first and inserts the module last, and a field repair swaps the module without touching the carrier. During prototyping one carrier can take modules from different batches for comparison.
Same package does not mean same pinout
Two modules can share the outline and still have completely different pinouts. Selection depends on the pin table, not the shape. Whether two families in the same package can share a carrier board is decided by the supplier's pin definitions, not by whether one physically fits the other's socket. Get the pin table at project start, before planning the carrier.
ATE9430T / ATE9430R / ATE9460 / ATE9461 all use an 80-pin edge connector at 0.5 mm pitch, 22.0 × 45.0 mm (±0.15 mm), 0.80 ± 0.07 mm PCB, components up to 1.1 mm on top and 2.1 mm underneath, and an M2 screw hole (2.2 mm) at the end. The 4K30 and 4K60 families share the package but not the pinout, so their carriers cannot be mixed. DXF drawings and STEP 3D models are available for mechanical checks.