Installing ASG 120 but Can't connect to it

I have an ASG 120 and it has a network address of 192.168.50.1

I want to connect to it and configure it but I can't seem to connect. I don't have a VGA cable so I can't connect to it like it's a computer so I'm just connecting to it from a laptop and configuring the laptop

router 192.168.50.1
computer 192.168.50.50
subnet mask 255.255.255.0
dns 192.168.50.1

I know that DHCP is not turned on on the ASG 120

The ASG is running some earlier version of 7

Is it because I'm not using a crossover cable, that I can't connect to it? Do I need a crossover cable to use the ASG 120?