Product/Model Name: QNAP / TS-509 CPU: Intel Celeron Processor 1.6GHz Memory: 4GB (DDR2) Firmware has been updated to the latest version (QTS 4.2.6.20240618). I haven't been able to test RS-232 and e-SATA as I don't have the necessary equipment, but the LAN ports x2, USB ports x5, and VGA output are all working fine. The unit has been cleaned with alcohol to some extent, including the interior. The condition is relatively good, but as this is a used item, please refrain from purchasing if you are looking for a perfect appearance. I have installed five HDDs for testing and confirmed the operation of RAID 6 configuration and file sharing via SMB. I have performed a simple initial setup with a 500GB HDD for testing included. The HDDs are currently showing a normal status, but they are for testing purposes only, and I cannot guarantee their operation. Please understand this. Since the initial setup is complete, you can use and reconfigure it immediately from a PC with Qfinder installed. The initial settings are: ID: admin PW: admin 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., when you are away from home) by registering a new account. ※ List of items included ※ ・Main unit ・500GB HDD for testing x1 (installed) ・Generic power cable (used) ・3.5-inch HDD mounting screws (used) 20 pieces (4 installed) ・CD-R (manual, Qfinder, and various software) The HDD mounting key is not included, but it is in the unlocked state, so there is no problem with installing the HDD. You can lock it if you have a separate key. If you don't need the HDD, you can remove it and get a discount of ¥400, so please contact me in the comments before purchasing. If there is a malfunction after arrival, we will accept returns within 3 days of arrival.