Please read the profile section before purchasing. This is a set of a compatible AC adapter (equivalent to NEC PAD-113) for the PC Engine SuperGrafx. Unlike the genuine AC adapter, this one is very lightweight and is a safe AC adapter that has PSE certification. (Most of the other sellers' products do not have PSE certification.) The specifications are as follows: Compatible models: PC Engine SuperGrafx Included items: AC adapter (9V/1A [center negative] ・ PSE certified) ・ Plug adapter (All included items are new and have only been tested for operation.) How to use it is very simple: ① Plug the AC adapter into a power outlet. ② Insert the DC plug of the AC adapter into the DC jack of the PC Engine SuperGrafx. ③ Turn on the PC Engine SuperGrafx. ※ The order of ① and ② does not matter. ※ Although the DC plug may physically connect to game consoles other than the PC Engine SuperGrafx, do not use it for any other game consoles. The game console may be damaged due to differences in voltage or polarity. In addition, this product can be returned if it does not power on. Please read the following return conditions carefully before purchasing. ● Warranty You can return the product if it does not power on, regardless of whether the problem is with the AC adapter or the device itself. If you wish to return the product, please contact us via the comment section within 14 days of receiving the product. Please return the product at your expense using a trackable method (such as Click Post, Yu-packet, Specified Recorded Mail, or Letter Pack). You are responsible for the return shipping costs.