The other strand of flex was soldered directly to the positive.

PCB pins are soldered directly to a printed circuit board and not to a wire.

In addition to this, the design of the modchips allowed it to be soldered directly to the top of the points on the motherboard.

Subminiature tubes with long wire leads, introduced in the 1950s, were often soldered directly to printed circuit boards.

The hard drive, memory, and battery are enclosed within the casing, with memory soldered directly to the logicboard.

All other flying leads for the switches and indicators are at low voltage and these can be soldered directly to the p.c.b.

All the chips are soldered directly to the logic board, so I'm not sure why you think that makes this one special.

Everything else is soldered directly to the logic board, including the RAM.

In other words, the pins are soldered directly to the surface of the board, not inserted in holes or sockets.

Its power supply unit was directly soldered and fixed to the same wire harness.