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Small green Dell circuit board with multiple connectors and surface-mounted components

DELL

DELL Latitude 7400 5400 Precision 7740 Junction Circuit Board 943V3

SKU CH-2YJT-17RRV

Genuine Dell OEM junction board connecting fingerprint reader, RFID and smart-card modules on compatible Latitude and Precision laptops

  • ProcessorLaptop-computer-replacement-parts
  • Genuine Dell OEM part ensures exact fit and reliable operation
  • Connects fingerprint reader, RFID and Smart Card modules to the motherboard
  • Compatible with Latitude 7400, 7300, 5400, 5411, 5511 and Precision 7740 models
  • Mounts on the underside of the Touchpad Palmrest assembly for secure installation
  • Identified by Dell part numbers 943V3, JKHYW, EDC40 and LS-G821P

Genuine Dell OEM Junction Circuit Board

This is a genuine Dell OEM junction circuit board carrying part number 943V3. It connects optional fingerprint reader, RFID and Smart Card modules to the motherboard on supported Latitude and Precision laptops. The board mounts on the underside of the Touchpad Palmrest assembly. You will receive exactly the component shown in the product images.

Repair Technicians Replacing a Damaged Junction

The part suits technicians who need to restore fingerprint, RFID or Smart Card functionality on a Latitude 7400, 7300, 5400, 5411, 5511 or Precision 7740. It is not for buyers who require a full palmrest assembly or a motherboard. It is not for laptops outside the listed model range.

Dell Part Number 943V3 Confirms Exact Fit

The decisive specification is the Dell part number 943V3, also marked EDC40 and LS-G821P on the board. Matching this number to your service manual guarantees the correct junction circuit for the listed Latitude and Precision systems.

How it compares

Measured against everything we stock in Motherboard Add-On Parts, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 99% of the 242 comparable items (median $50.49).

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Specifications

Product
Brand nameDELL
Processor
ProcessorLaptop-computer-replacement-parts

Questions about this item

How is the 943V3 junction board installed onto the Latitude 7400 palmrest assembly?

The board mounts on the underside of the touchpad palmrest assembly. The step people miss is routing the fingerprint reader, RFID and Smart Card flex cables through the chassis cut-outs before securing the board screws.

Which connectors on the 943V3 board tend to need replacement after repeated docking cycles?

The ZIF connectors for the fingerprint reader, RFID module and Smart Card reader flex cables are the first points to wear; the board itself has no moving parts and rarely fails unless a connector is damaged.

What thermal limit appears first on the 943V3 board during sustained heavy I/O from the Smart Card and RFID modules?

The board carries only low-voltage signalling for the fingerprint reader, RFID and Smart Card interfaces, so it does not generate measurable heat; no thermal limit is reached under normal sustained use.

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