Circuit diagram for the W7J board, a 1.27 MB PDF with only the project code in its name and no brand or revision.

Circuit schematic in PDF for Sony board MBX-202, identified by the M790 code, about 788 KB.

ZIP archive of 1.88 MB for the ASUS N551ZU laptop, with the name indicating BIOS version 307.

Compressed RAR package with BIOS firmware for the Samsung NP300E5V laptop, 5.68 MB in size, which suggests more than one image or a large full dump inside.

RAR archive of about 1.5 MB labelled AH530, which likely refers to the Fujitsu Lifebook AH530 notebook, although the name itself gives no brand, board number or firmware…

Firmware archive described as working (OK) for a Fujitsu AH531-type laptop, compressed to 3.89 MB in RAR form.

Compressed firmware for a Sony VAIO built on the MBX-237 mainboard, a 54.2 KB zip. At this size the archive is too small to hold a full BIOS image, so it likely contains…

An 8 MB raw BIOS binary labelled for the HP 4540, most likely a ProBook 4540s, with the name marking it as checked and working.

A 4 MB raw BIOS image for the ASUS K52F, marked in the name as tested and working. No board revision or BIOS version is given, so check the motherboard markings before…

RAR package with BIOS firmware for the Lenovo IdeaPad Z510, compressed to about 3.07 MB.

PDF datasheet of 1.77 MB for the Microchip PIC16C712 and PIC16C716 8-bit microcontrollers.

Datasheet for the tiny22, a name pointing to the Atmel AVR ATtiny22 microcontroller, provided as a 933-935 KB class PDF of 935 KB.

Summary datasheet, 249 KB PDF, for a group of mega parts listed as 640, 1281, 1280, 2561 and 2562, matching the Atmel AVR ATmega640/1280/1281/2560/2561 family; the final…

Combined datasheet for the Atmel ATmega48, ATmega88 and ATmega168 AVR microcontrollers, which share one pin-compatible family and differ mainly in flash, EEPROM and SRAM…

Datasheet covering the Atmel ATxmega D3 series, 64-pin parts in the cost-reduced AVR XMEGA D family.

Datasheet for the LM337, an adjustable three-terminal negative voltage regulator, the counterpart of the positive LM317.

Datasheet for the LM555 timer, the classic 555 IC, as a 231 KB PDF file. It covers pin functions, electrical characteristics and the standard monostable and astable…

Datasheet in a 2.90 MB PDF, named only doc6310 and therefore not stating which component it covers.

Atmel datasheet for the AT89S53, an 8051-compatible microcontroller with 12 KB of in-system programmable flash and SPI serial programming.

Datasheet in PDF (236 KB) for the TL081, a single JFET-input operational amplifier widely found in audio gear, filters, power supply control loops and instrumentation.

Archive of 328 KB holding Wicardd for S Sh@ra, the name written partly in Russian meaning for S Sh@ra.

Firmware archive for the SR-200HD EXTREME receiver, version V1.15 with build number 23303, dated 12 November 2021, as a 4.87 MB zip.

Archive of 9.07 MB named for model code G614FH with version 301; the name suggests a firmware release for that model but gives no brand or file details, so check the…

Raw .bin firmware file of about 43 MB whose name gives only X96 and a version-like string 01020200, with no model, board or chip details.

Patched BIOS image for a Dell Latitude 7330, about 10.1 MB packed in a RAR archive. The name does not say what was patched, but such files are usually modified to clear…

Schematic for the HP Evo 620 notebook, delivered as a 1.32 MB PDF. The name provides only the model, with no motherboard number, ODM project or revision, so check the…

Repair guide for the P553UJ notebook, abbreviated RG in the name, in a 726 KB PDF. These guides normally combine board photographs, component locations, typical voltage…

Lenovo 300e 2nd generation BIOS image, 16 MB in raw BIN form, labelled old and with an enrol or ast note that the name does not fully explain.

Small 65.1 KB PDF reference for the HEF4008BP, a CMOS logic device from the HEF4000 series that the 4008 number identifies as a four-bit full adder; the BP suffix…

Datasheet covering the 4N35 to 4N37 family of optocouplers, stored as a 276 KB PDF and catalogued as a schematic.

Component sheet for the 3SK268 supplied as a 32.8 KB PDF and placed in the schematic category. Beyond the part number, the name gives no further detail.

PDF of 426 KB named for the 2SK2842 part number and filed in the schematic category. Because the 2SK prefix denotes an N-channel field-effect transistor in JIS…

Covering the 2SK2733, this 413 KB PDF sits among schematics but is most likely the device datasheet, since 2SK is the Japanese JIS prefix for N-channel field-effect…

A 137 KB PDF for the 2SK2714 with a 1-5 suffix that the name leaves unexplained, possibly an edition or page range.

The 2sk2578 is the part described in this 34.5 KB PDF, filed as a schematic. JIS part naming uses 2SK for N-channel FETs; the name gives no package, maker or application…

A 134 KB PDF for the 2SK2460N, catalogued as a schematic but almost certainly a datasheet for a discrete transistor, since 2SK numbers under the Japanese JIS system…

The 2SK2350 is identified here only by its part number, in a 417 KB PDF catalogued as a schematic.

Part reference sheet in PDF form for the 2SK663, carrying a 2SK prefix that under the Japanese JIS system denotes an N-channel FET.

At 151 KB, this 2SK543 PDF is one of the larger sheets in the series, probably including detailed characteristic curves and package dimensions.

Reference sheet for the 2SJ620 in PDF form, 345 KB, listed in the schematic category. The 2SJ prefix follows the Japanese JIS scheme for P-channel field-effect…