USB power. Controller is clean. Comes with an expansion interface cap. {Shipping is also free, so this is ultimately the best deal.} Some items may be slightly yellowed compared to the photos. These are toys from over 40 years ago, so there are no items that are completely free of yellowing, but I've assembled them from items around this level. This is the digital TV engine. Designed, engineered, and created by me. The circuit is as simple as it can be; an old man's shining technique. A 1.8cm x 2.3cm original board (two example photos, actually there are six patterns, used differently depending on the lot). Further miniaturization is probably impossible! Ultra-simple, with minimal parts, so the probability of trouble is greatly reduced. This allows for an ultra-low price! (A shining technique only possible because an old man knows everything about electronic circuits.) ・No RF switch or dedicated AC adapter required. ・Sufficient cable length! I've modified the original Nintendo Family Computer so you can play it on modern TVs. As long as you have a game cassette ROM, you can play it without any additional accessories. 【Good points!】 ① Cables are connected to the main unit like the controller, so you won't lose them! ② The image is incredibly clear! ③ Includes a guide to revive your decaying and corrupted ROMs! ④ Ultra-energy saving. A general USB charger (0.8A (800mmA) or more) is OK, weighing less than 1/8th of the original adapter! ◆ The photos show "FF logo-less". "FF logo-ed" items may be shipped. All functions are the same. ◆ The color of the wires, etc., may be slightly different from the photos. All functions are the same. 【Modernization (modification) points are the following six!】 ① USB bus power ② Composite video terminal (yellow pin jack) & speaker terminal. The Famicom is a monaural sound source. Unnatural stereoization (pseudo-stereo) from directions unrelated to the image is not performed from a health perspective (motion sickness-like mood disorders, fatigue caused by sounds from directions unrelated to the image you are absorbed in, etc.). Please plug it into either the left or right audio input of your TV. ③ Controller silicone rubber crack replacement, removal of hand grease. ④ Removal of potential vertical stripe interference noise in the image (excessive treatment is not performed because blurring the image with capacitors to eliminate the stripes also eliminates the fine patterns of the Tetris castle). ⑤ Cassette insertion contact refresh ★ Please! Don't just leave a bad review and leave, please contact me. I will always take action to ensure your satisfaction. ★