Supermicro and Console Redirection Through a COM or Serial Port
Yes there is a legitimate reason for this in the year 2023. No it is never as simple as they'd have you believe. These are just a couple of quick tips to get Console Redirection working on a Supermicro MotherBoard through a COM / Serial Port / RS-232 / TTY Port / DB-9 Port, etc (COM port will be the term used in this article because Supermicro uses it in their BIOSs)
Watch out on some Supermicro motherboards that have COM2 (more precisely SOL/COM2) Ports 'preconfigured' for Console Redirection. Key point here is SOL, which equals Serial over LAN. It won't work if connecting directly to it via a USB to Serial Port or built in Serial Port on a Computer and Null Modem Cable.
Null Modem Cable (and settings for COM / Serial Port on Console and Computer)
When connecting to a properly configured COM Port on a Supermicro Motherboard, use a Null Modem Cable. Or if you're interested in fewer cables and fewer connections, try a dedicated USB to Serial Adapter wired for Null Modem Capability (AKA 'crossover wired').
Below are the recommended settings (so set your Serial Console (SecureCRT, PuTTy, Hyper Terminal, etc.) and / or Serial / COM Port to the same settings)
BPS (Bits per Second): 115200
Data Bits: 8
Stop Bits: 1
Flow Control: None
VT-UTF8 Combo Keyboard Support: Enabled
Recorder Mode: Whatever you want
Legacy OS Redirection Resolution: 80x25
Putty Keypad: Linux
Redirection After BIOS POST: Always Enable
Settings Specific to SecureCRT, PuTTY, etc.
SecureCRT (Session Options, Terminal, Emulation);
- Terminal: ANSI
- Color Mode: ANSI
- Select an alternate keyboard emulation: Linux