I think this was produced by Bung, then copied by UFO.

Comment by UFO: UFO introduce the Pocket Linker. This device interfaces with a PC, and lets you backup Neo Geo Pocket and Neo Geo Pocket Colour games. It also lets you write games to seperate flashROM carts.

Pocket Linker is a device that allows data to be transferred back and forth NGP Ram card and any computer that has a parallel port. The advanced design of the NGP card and Pocket Linker makes it easy for programmers and coders to burn a ROM file to the NGP Ram card. To transfer data into the NGP Ram card, the only requirements are the Pocket Linker, PC and our customized software. No need for expensive and difficult to use EPROM burner.

Parallel/Printer port - Pocket Linker has a built-in PC standard parallel/printer port, it does not require expensive PC parallel/printer port adapters and thus, there are no hidden costs involve. There are also no difficult, troublesome ISA/PCI cards to install and no need to dismantle the computer. User can use any computer without installing or dismantling any ISA/PCI cards. The Pocket Linker is hassle-free and works fine with all computers that has standard ECP PC parallel/printer port, including notebooks. Cartridge Slot - Standard original game cartridge compatible slot, works with NGP RAM card and any original game cartridge.
Power Supply - Pocket Linker operates on a 7V-12V, 150ma or above DC power supply. The center point polarity of the power supply plug to the GB GameJack is negative (-).
Battery Compartment - The GB GameJack has a battery compartment and fit Only 6 1.5VAAA size batteries. . Batteries are not used when Pocket Linker is attached to DC power supply. DC power supply does not included in the package. ASIC -Pocket Linker has a built-in asic fully developed by Bung.