Product/Model Name: QNAP / TS-451D2 CPU: Intel® Celeron J4025, Max Burst 2.9 GHz (2 cores) Memory: Upgraded to 8GB (DDR4) Firmware updated to the latest version (QTS 5.2.6.3195, 64-bit). LAN ports x 2, USB ports x 4, and HDMI 2.0 (4K) output are all functioning correctly. The sticker with the serial number, MAC address, and myQNAP cloud key has some damage (verifiable with Qfinder). The enclosure has multiple scratches, so please refrain from purchasing if you require a perfect appearance. RAID 5 configuration and file sharing via SMB have been verified with four HDDs installed for testing. A 500GB HDD for testing is included and has been pre-configured with basic initial settings. The HDD is currently deemed to be in good working order, but we cannot guarantee its operation. Please understand this. Since it has been pre-configured, you can use and reconfigure it immediately from a PC with Qfinder installed. Initial settings are: ID: admin5 PW: password5 You can use it as is, but please reconfigure it yourself, including volume expansion and RAID settings. You can use myQNAPcloud (remote access from smartphones, etc.) by registering. ※Included Items※ ・Main unit ・500GB HDD for testing x 1 (installed) ※No screws are included as the HDD trays can be installed without screws. ・AC adapter (general purpose) + general-purpose power cable (used) ・CD-R (manual, Qfinder, and various software) The HDD mount keys are not included, but the trays are in the unlocked state (cannot be locked), so there is no problem installing HDDs. Locking is possible if you have the separately sold keys. We generally do not accept price negotiations. Immediate purchase is OK, but we can also accommodate the following configuration changes. Please contact us via comment before purchasing if you wish to make changes. ・400 yen discount without HDD ・+2,000 yen for 16GB memory upgrade If there is a malfunction after arrival, we will accept returns within 3 days of arrival.