![Does anyone know anything about this AST Advantage Premium card? It seems to be a RAM expansion with a serial and parallel port, but it looks like it's missing a chip : Does anyone know anything about this AST Advantage Premium card? It seems to be a RAM expansion with a serial and parallel port, but it looks like it's missing a chip :](https://i.redd.it/hicd1f3mbvv41.jpg)
Does anyone know anything about this AST Advantage Premium card? It seems to be a RAM expansion with a serial and parallel port, but it looks like it's missing a chip :
![Hi-link HLK-7688A 128M Ram/32M flash development board UART serial port wifi module SPI wireless MT7688AN chip Openwrt version Hi-link HLK-7688A 128M Ram/32M flash development board UART serial port wifi module SPI wireless MT7688AN chip Openwrt version](https://ae01.alicdn.com/kf/H1b019bf509fe41289eb480d5a79eb8cfF/Hi-link-HLK-7688A-128M-Ram-32M-flash-development-board-UART-serial-port-wifi-module-SPI.jpg)
Hi-link HLK-7688A 128M Ram/32M flash development board UART serial port wifi module SPI wireless MT7688AN chip Openwrt version
![NEW PRODUCT – ESP-PSRAM64H Chip – 64 Mbit Serial Pseudo SRAM – 3.3V 133 MHz « Adafruit Industries – Makers, hackers, artists, designers and engineers! NEW PRODUCT – ESP-PSRAM64H Chip – 64 Mbit Serial Pseudo SRAM – 3.3V 133 MHz « Adafruit Industries – Makers, hackers, artists, designers and engineers!](https://cdn-blog.adafruit.com/uploads/2020/08/4677_iso_ORIG_2020_08.jpg)
NEW PRODUCT – ESP-PSRAM64H Chip – 64 Mbit Serial Pseudo SRAM – 3.3V 133 MHz « Adafruit Industries – Makers, hackers, artists, designers and engineers!
![Keyboard driver circuit. a 256 8 bit internal RAM, 32 programmable I/O... | Download Scientific Diagram Keyboard driver circuit. a 256 8 bit internal RAM, 32 programmable I/O... | Download Scientific Diagram](https://www.researchgate.net/publication/12424646/figure/fig2/AS:601681867857930@1520463544678/Keyboard-driver-circuit-a-256-8-bit-internal-RAM-32-programmable-I-O-line-8-interrupt.png)