This product is not subject to discounts. Features: No soldering required, wire insertion type. Easy design, just change the sub-board; with other products, you have to figure out where to put the jumper wires. This one just requires you to insert the bundled jumper wires without any confusion. Anyone can replace it by sanding the exterior. Stereoization with a built-in 3D sound audio processor. Normal operating voltage: 5V to 9V. Cannot use the Famicom's original AC adapter. ＜When replaced＞ Clearer video Stereo sound Can connect to a TV with AV terminals Operation lamp lights up ＜Set Contents＞ Sub-board USB power cable (approx. 1m) AV cable (approx. 3m) Installation manual It is known that cheap switching AC adapters and USB power supplies can cause horizontal noise on the screen. The sure way to distinguish between the early and late models: Early models have the main power switch lead coming from the sub-board. Late models have the main power switch lead coming from the main board. Procedure and operation are shown on YouTube: Full-fledged Famicom AV conversion kit Version 3 Please ask any questions in the comments.