HP Mainboard i5-4300U

When a ProBook 450 G1 or 470 G1 goes down in a busy office, the HP Mainboard i5-4300U gets it back to work fast. This genuine OEM replacement board carries the Intel Core i5-4300U processor, so you get the same reliable performance the laptop had when new—no BIOS surprises, no driver headaches. It's the board HP built for these machines, and it fits perfectly every time.

Key specifications

• Processor: Intel Core i5-4300U (4th Gen Haswell), 2 cores / 4 threads, 1.9 GHz base, 2.9 GHz turbo, integrated Intel HD Graphics 4400
• Memory: 2 x DDR3L SODIMM slots, max 16 GB (2 x 8 GB)
• Storage: 1 x SATA III (6Gb/s) port
• Networking: Integrated Gigabit Ethernet (RJ-45 via daughterboard), M.2 slot for WLAN/Bluetooth module
• Expansion: USB 3.0 and USB 2.0 internal headers, HDMI/VGA headers for external ports, eDP for internal display
• Security: TPM (Trusted Platform Module) onboard
• Form factor: Proprietary HP laptop motherboard, compatible with HP ProBook 450 G1 and 470 G1

Why choose it

This isn't a generic substitute—it's the original HP part number 803000-001. That means the mounting holes, connectors, and BIOS are all exactly as designed. You won't waste time trimming standoffs or patching firmware. Just install it, and the laptop runs like it should.

Ideal use cases

• Replacing a failed motherboard in an HP ProBook 450 G1 or 470 G1
• Refurbishing corporate laptops for resale or redeployment
• Upgrading a system with a known-good board to extend its service life

Good to know

The i5-4300U sips power at just 15W TDP, so battery life stays strong. The board supports Windows 10 and Linux out of the box, and the TPM chip lets you use BitLocker or other encryption without extra hardware. If you're ordering for a repair shop, keep one on the shelf—these ProBooks are still common in business fleets.