This seller sells a very non-quality product, he bought 3 modems for 32 ports, 64 ports and again 32 ports. The first modem works perfectly, the modem has 64 ports - after a month 4 ports stopped working. From the second modem to 32 ports (current position) - a series of 16 ports did not work right away (half of the modem), I strongly do not recommend ordering goods from this seller.