While it doesn't look like an neo4, it does like that trash does the same trick as the NEO4: replace a portion of the PS2 ROM with it's own (see the square PLCC chip ? that's either a flash or an OTP eprom).
Get rid of that and fit anything else. Even a low end MODBO is better than that old chip.
SCPH-10000_GH-001 SCPH-15000_GH-003 SCPH-18000_GH-008 SCPH-30001_GH-005 SCPH-30000_GH-016(V4) SCPH-30001_GH-010(V4)
2xSCPH-10190, 2xSCPH-10350, 2xSCPH-10280
"**** j0 hackers!"
-Sjeep (As seen on TOXIC OS ELF...)