Hello. It is indicated in the product description that this 16GB RAM is 100% compatible with the QNAP TS-464 8G but in the QNAP TS-464 8G product description. It states that the maximum memory is 8GB. Unless I'm mistaken, the TS-464 8G comes in 2 versions. 1 with 8GB RAM soldered to the motherboard and non-expandable and a second version with two expandable RAM slots with an 8GB strip supplied with the purchase. Which version do you sell? Thank you in advance for any further information.