Please note that there is “directional” in the installation of RD1.
If you installed RD1 at a wrong direction, not only will RD1 be damage but will also damage the
ROM on the motherboard, even to the extent of damaging the motherboard.
Damages done due to wrong installation direction or method is not within the scope of repair and
1. Locate BIOS ROM on the Motherboard
2. Remove ROM
BIOS ROM is about 12mmx15mm installed inside the
socket of about 18mmX20mm. Also, in most condition,
there is a BIOS licensee’s sticker on the BIOS ROM.
Cannot use RD1 product if the ROM was not installed in
the socket but was soldered
directly on the motherboard.
BIOS ROM has its direction.
As shown in the drawing, one
corner was cut into a plane
corner that is known as "key".
This plane corner represents its direction.
Use the accessory ROM extractor and refer to Method
(1) to hold one corner of ROM and its opposite
(diagonal) corner but should be at the corner of “key”.
The claws of extractor should not be deep into the ROM
as much as possible, then hold down (2) and remove
the ROM from the socket vertically upward.
3. Installation of RD1
Insert the connector at the back of RD1 (the side
without yellow sticker) into the empty socket where the
ROM was taken out in Step 2. It is very important to
grab the proper direction. Both the connector and
socket have directional (key), the key of connector
should be aligned to the key of socket and both should
set at the same corner.
4. Installation of Original ROM
After aligning the
directions, insert the
connector into the
socket at even pressure
until it reaches the
Insert the ROM back into RD1. It is still necessary to make
sure that the key of ROM should at the same corner as the
key of RD1 (there is a asterisk sticker on the key of RD1, or
use the extending yellow cable on RD1 as they direction of
5. Connect Switch Cable
Plug the yellow cable extending on RD1 into the black end of switch cable. There is no
direction in plugging in.
6.Fix the attached metal plate of selection switch
At one side of switch cable is the metal plate of selection switch. Screw the metal plate
on the bracket, then fix the bracket on the computer
housing or fix it directly on any empty D-Sub9