Uploaded June 2023 | Updated September 2026, 2 weeks ago
Make a 128K Mac FOR CHEAP with Fat Mac Switcher, but have 512K RAM too!
🔎 INDEX
0:00 — Intro
4:11 — Installation
42:55 — Testing
58:21 — Closing Words
⚠️ CAUTION!
It's OK to boot/use your compact Mac with the case-back off, but DO NOT work inside it while powered. No need to discharge the CRT for Fat Mac Switcher installs, but DO NOT touch the back of the CRT. Power off, then disconnect the motherboard carefully such that your hand won't fly upward and break the CRT yoke (not repairable). Toggle Fat Mac Switcher only while powered-off. Be Safe, and Have fun!
🛒 STUFF TO BUY
• Fat Mac Switcher: bit.ly/43GDQYj
• Torx T15 with LONG 12" (30cm) neck (to open Mac): amzn.to/3qLyJYb
• RAM chips†: bit.ly/42K4jD3
• RAM sockets†: bit.ly/42K4pup
† 16 chips & sockets required ONLY for 128K motherboards. Kay Koba suggests buying 18 chips just in case 1 or 2 are bad because X-ray machines can kill them!
• FloppyEMU: tinyurl.com/2y9dth3n
• ROM-inator: bit.ly/3qQAKCE
• Caymac Vintage Store (Mac-O-Meter, etc.): ko-fi.com/caymacvintage/shop
In Asia or Europe? Email Joakim Larsson at vintagemacviking@gmail.com for a price quote.
(My video about those great products is coming soon.)
🛠️ TOOLS
• YIHUA 959D Hot Air Station: amzn.to/3x4E9O1
• Hakko FR301 Desoldering Station (MUCH better than mine!): amzn.to/3JjeGqm
• Hakko Soldering Station (FX888DX): amzn.to/4kEttgq
💁♂️Always use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 0.6mm): amzn.to/3DVnAro
• MG Chemicals Flux: amzn.to/3kuAcsZ
• Desoldering wick: amzn.to/4bNoTbE
• 99% ISO Alcohol (Spray Bottle!): amzn.to/3ae4fG6
• 99% ISO Alcohol: amzn.to/3R5TRCk
💁♂️2 alcohol choices because it's often out of stock. 70% will work, 91% is better, but 99% is best for electronics cleaning (fast drying & no residue).
• Tweezer kit: amzn.to/3JTT4C1
• Helping Hands & Magnifier (cheap): amzn.to/3DDGeqW
• 5x or 10x illuminated Magnifier: amzn.to/3YCySJ7
• Rubberized Vice: amzn.to/3Dtv2NI
• EEVBlog 121GW Multimeter: bit.ly/40EOwWj
• ProbeMaster 8043SK Kit: bit.ly/3ZaqPDp
💵 Some links above lead to Amazon USA. If you click & purchase within 24 hours, Amazon may pay me a small commission on qualifying items in your Cart.
💾 SOFTWARE
• MacWrite: bit.ly/42HCtXZ
• MacPaint: bit.ly/3p5YKRw
• FullPaint: tinyurl.com/3pj26m7c
• System 0.85 (needs 64K ROMs): bit.ly/42YQb9f
• MacAttack! (tank sim): bit.ly/3NAbvgN
• StuntCopter: tinyurl.com/23m3893p
• Lode Runner: bit.ly/43NThOn
• PRAM 5.0: tinyurl.com/4zpxujax
• BasetoBase RPN Calculator: tinyurl.com/mvs5urkz
📚 REFERENCE
• Manual for Fat Mac Switcher: tinyurl.com/ycxkd9ec
• @CayMacVintage shows RAM chip removal: youtu.be/9lIkjoOUxPs
• 800K drive & 64K ROMs (pulsing problem explained): tinyurl.com/bdzxmsum
• Apple Does It Again (1984 brochure for resellers): tinyurl.com/26b82xht
• My ROM-inator Video: youtu.be/CVClCLgBm6k
• Early Mac sales numbers: tinyurl.com/mr2jz64k
• Lisa sales numbers: tinyurl.com/mryhsp3p
🙏 HUMBLE THANKS to these AMAZING channel supporters:
• Frank Conforti 🇺🇸 (monumental supporter)
• Philippe Astier 🇫🇷 (monthly supporter)
• Mauro Acciaccaferri 🇮🇹 (monthly supporter)
• Gavin Maxwell 🇦🇺 (monthly supporter)
• Eugene Gillott 🇨🇦 (repeat supporter)
• Mark B. Newlon 🇺🇸 (generous supporter)
🙏 SPECIAL THANKS to Kay Koba
Kay always dreams up insanely great stuff and is really nice guy too. He's very responsive in offering me help and advice, and he treats others the same. Kero's Mac Mods screams "MADE IN JAPAN" premium quality. I can't say enough good things about Kay and his online store. Great job, Kay!
💰HOW TO SUPPORT THIS CHANNEL
paypal.me/supportJDW
📺 Please SUBSCRIBE:
youtube.com/c/JDW11/?sub_confirmation=1
🎬 MY VIDEOS
youtube.com/user/JDW26/videos
🎵 MUSIC CREDITS
• "Sunset Strip" by Audionautix is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
Artist: audionautix.com
• "Podcast Theme" by Kevin Hartnell is licensed under a CC BY-SA 4.0 Attribution-ShareAlike License: creativecommons.org/licenses/by-sa/4.0
Download: bit.ly/3NlcRf8
#FatMacSwitcher #Macintosh128K #KerosMacMods #JDW1
Make a 128K Mac FOR CHEAP with Fat Mac Switcher, but have 512K RAM too!
🔎 INDEX
0:00 — Intro
4:11 — Installation
42:55 — Testing
58:21 — Closing Words
⚠️ CAUTION!
It's OK to boot/use your compact Mac with the case-back off, but DO NOT work inside it while powered. No need to discharge the CRT for Fat Mac Switcher installs, but DO NOT touch the back of the CRT. Power off, then disconnect the motherboard carefully such that your hand won't fly upward and break the CRT yoke (not repairable). Toggle Fat Mac Switcher only while powered-off. Be Safe, and Have fun!
🛒 STUFF TO BUY
• Fat Mac Switcher: bit.ly/43GDQYj
• Torx T15 with LONG 12" (30cm) neck (to open Mac): amzn.to/3qLyJYb
• RAM chips†: bit.ly/42K4jD3
• RAM sockets†: bit.ly/42K4pup
† 16 chips & sockets required ONLY for 128K motherboards. Kay Koba suggests buying 18 chips just in case 1 or 2 are bad because X-ray machines can kill them!
• FloppyEMU: tinyurl.com/2y9dth3n
• ROM-inator: bit.ly/3qQAKCE
• Caymac Vintage Store (Mac-O-Meter, etc.): ko-fi.com/caymacvintage/shop
In Asia or Europe? Email Joakim Larsson at vintagemacviking@gmail.com for a price quote.
(My video about those great products is coming soon.)
🛠️ TOOLS
• YIHUA 959D Hot Air Station: amzn.to/3x4E9O1
• Hakko FR301 Desoldering Station (MUCH better than mine!): amzn.to/3JjeGqm
• Hakko Soldering Station (FX888DX): amzn.to/4kEttgq
💁♂️Always use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 0.6mm): amzn.to/3DVnAro
• MG Chemicals Flux: amzn.to/3kuAcsZ
• Desoldering wick: amzn.to/4bNoTbE
• 99% ISO Alcohol (Spray Bottle!): amzn.to/3ae4fG6
• 99% ISO Alcohol: amzn.to/3R5TRCk
💁♂️2 alcohol choices because it's often out of stock. 70% will work, 91% is better, but 99% is best for electronics cleaning (fast drying & no residue).
• Tweezer kit: amzn.to/3JTT4C1
• Helping Hands & Magnifier (cheap): amzn.to/3DDGeqW
• 5x or 10x illuminated Magnifier: amzn.to/3YCySJ7
• Rubberized Vice: amzn.to/3Dtv2NI
• EEVBlog 121GW Multimeter: bit.ly/40EOwWj
• ProbeMaster 8043SK Kit: bit.ly/3ZaqPDp
💵 Some links above lead to Amazon USA. If you click & purchase within 24 hours, Amazon may pay me a small commission on qualifying items in your Cart.
💾 SOFTWARE
• MacWrite: bit.ly/42HCtXZ
• MacPaint: bit.ly/3p5YKRw
• FullPaint: tinyurl.com/3pj26m7c
• System 0.85 (needs 64K ROMs): bit.ly/42YQb9f
• MacAttack! (tank sim): bit.ly/3NAbvgN
• StuntCopter: tinyurl.com/23m3893p
• Lode Runner: bit.ly/43NThOn
• PRAM 5.0: tinyurl.com/4zpxujax
• BasetoBase RPN Calculator: tinyurl.com/mvs5urkz
📚 REFERENCE
• Manual for Fat Mac Switcher: tinyurl.com/ycxkd9ec
• @CayMacVintage shows RAM chip removal: youtu.be/9lIkjoOUxPs
• 800K drive & 64K ROMs (pulsing problem explained): tinyurl.com/bdzxmsum
• Apple Does It Again (1984 brochure for resellers): tinyurl.com/26b82xht
• My ROM-inator Video: youtu.be/CVClCLgBm6k
• Early Mac sales numbers: tinyurl.com/mr2jz64k
• Lisa sales numbers: tinyurl.com/mryhsp3p
🙏 HUMBLE THANKS to these AMAZING channel supporters:
• Frank Conforti 🇺🇸 (monumental supporter)
• Philippe Astier 🇫🇷 (monthly supporter)
• Mauro Acciaccaferri 🇮🇹 (monthly supporter)
• Gavin Maxwell 🇦🇺 (monthly supporter)
• Eugene Gillott 🇨🇦 (repeat supporter)
• Mark B. Newlon 🇺🇸 (generous supporter)
🙏 SPECIAL THANKS to Kay Koba
Kay always dreams up insanely great stuff and is really nice guy too. He's very responsive in offering me help and advice, and he treats others the same. Kero's Mac Mods screams "MADE IN JAPAN" premium quality. I can't say enough good things about Kay and his online store. Great job, Kay!
💰HOW TO SUPPORT THIS CHANNEL
paypal.me/supportJDW
📺 Please SUBSCRIBE:
youtube.com/c/JDW11/?sub_confirmation=1
🎬 MY VIDEOS
youtube.com/user/JDW26/videos
🎵 MUSIC CREDITS
• "Sunset Strip" by Audionautix is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
Artist: audionautix.com
• "Podcast Theme" by Kevin Hartnell is licensed under a CC BY-SA 4.0 Attribution-ShareAlike License: creativecommons.org/licenses/by-sa/4.0
Download: bit.ly/3NlcRf8
#FatMacSwitcher #Macintosh128K #KerosMacMods #JDW1
![MacSD Product Review [SCSI to SD]](https://i.ytimg.com/vi/zwz6qMC2ZE4/mqdefault.jpg "MacSD Product Review [SCSI to SD]
Like SSDs in modern computers, MacSD is a flash drive replacement for spinning platter SCSI hard drives in vintage Macs. Usage, benchmarks and brief comparisons with competing SCSI2SD products are presented.
🔍 INDEX
0:00 Intro
1:56 Key Features
3:40 Compatibility
4:32 Mounting Bracket
8:19 SCSI Termination
11:02 Disk Images
13:25 Composites
14:06 Configuration
19:53 File Fragmentation
22:14 Firmware Updates
26:07 Enhancing MacSD
28:54 General Usage
38:16 Benchmarking
49:02 Windows Support
49:37 Pricing & Purchase
51:32 Closing Thoughts
💳 BUY
Dont forget to watch the end of my video for a MacSD Discount Code!
• MacSD: https://bit.ly/3x9JUZl
• Multi-colored wire: https://amzn.to/3srYO9P
• RGB LEDs CLEAR (Common Cathode): https://amzn.to/2QvGPSF
• RGB LEDs FROSTED (Common Cathode): https://amzn.to/3ec7rAd
• Sony Tough 64GB V60 SD Card: https://amzn.to/2RKqfPE
• Kingston 32GB V90 SD Card & Reader!: https://amzn.to/2RAReNl
(Slower than the Sony V60 in MacSD.)
• Torx T15 with T-grip & 9 neck: https://amzn.to/3ceQqWk
• Torx T15 with 18 neck: https://amzn.to/2ScAskx
• FloppyEMU: https://www.bigmessowires.com/floppy-emu/
• Anti-static pad with Wrist Strap (16x24 / 41x61cm): https://amzn.to/3bfAE9Z
• Wall socket Ground adapter for banana-jack Wrist Strap: https://amzn.to/2Yvq5ge
💵 NOTE: Your price on Amazon (US only) is the same even if you dont click the amzn.to Affiliate links above, but if you do kindly click and purchase within 24 hours, Amazon may pay me a small commission on all qualifying items in your Cart (even items not linked above).
💾 SOFTWARE
• My Benchmark Results (ScreenShots & DSK image): https://bit.ly/2QQOMC4
(I added screenshots as well as new benchmarks to the DSK on April 24, 2021.)
• Bootable Drive Images: https://www.savagetaylor.com/downloads/downloads-macintosh/
• Mini vMac Blanks: https://bit.ly/3dxQRvK
• Mini vMac Download: https://bit.ly/3swZkU9
• Basilisk II Download: https://bit.ly/3aqOY1P
• SD Card Formatter (FAT32 MBR part 12, 0x0C): https://bit.ly/3gq6uHk
• Make B&W bitmaps from your photos: https://29a.ch/ditherlicious/
(Resolution of your submitted photos is key to a good result. Try 640x480 to start.)
📚 REFERENCE
• MacSD Manual, Firmware, etc.: http://macsd.com
• Mac Classic install: https://bit.ly/3xepui4
• MicroMac DiiMO 50MHz 68030 PDS Accelerator info (photo is wrong): https://bit.ly/3n8havI
• Photos of my boxed DiiMO kit: https://bit.ly/3xbD8m1
• Photos of my Daystar Turbo 040 PDS Accelerator: https://bit.ly/3vb5dYX
• Retro Guy Blog (Mac Plus Diode): https://bit.ly/2QFQ0A8
• Mac Plus Schematic: https://bit.ly/2Qa6bWy
• Format SD as 0x0C using the Terminal: https://bit.ly/3go5Nhz
NOTE! Apples Disk Utility formats FAT32 MBR as part 11, 0x0B.
• To get crisp pixels in Basilisk II on a Retina Mac, install and find hidden file .basilisk_ii_prefs in your Home folder. CMD-Shft-. to show/hide hidden files. Edit prefs file in TextEdit to add scale_nearest true. LOCK prefs file to prevent your changes from being deleted. Use SwitchResX to change your 5K iMacs resolution to 1920x1080 (not HiDPI) to get the cleanest full screen results, or consider adding a second line to the prefs to Double the pixel size: scale_nearest true. More info here: https://bit.ly/3x8dBtL
🎬 My Sony Tough SD Card Review: https://youtu.be/73gZlctLe8g
🗣 Helpful Groups:
• 68kMLA: http://68kmla.org
• Apple Macintosh Enthusiasts: https://bit.ly/2QCtbgL
• Vintage Apple Macintosh Enthusiasts: https://bit.ly/2YgpDRb
• Vintage Macintosh Restoration & Preservation: https://bit.ly/2XKFzfK
💁♂️SUPPORT THIS CHANNEL💰
https://www.paypal.me/supportJDW
📺 SUBSCRIBE:
http://www.youtube.com/c/JDW11/?sub_confirmation=1
#macsd #scsi2sd #macintosh #JDW")
![SPIISD v2 by Keros Mac Mods [Part 1 of 2]](https://i.ytimg.com/vi/zyInduIstWk/mqdefault.jpg "SPIISD v2 by Keros Mac Mods [Part 1 of 2]
Watch me assemble Kay Kobas SPIISDv2 and show 2 enclosures I had printed at JLCPCB.Compatible with Apple II Plus, IIe, IIc, IIc Plus & IIgs.
Part II video: https://youtu.be/gRluyxiFoGM
🔎 *INDEX*
0:00 — Intro
1:04 — Requirements
2:14 — The Kit
3:17 — Pricing
6:41 — Kit Assembly
29:43 — Adapter Assembly
38:55 — First Test
39:34 — 3D-printed Cases
47:06 — Closing Thoughts
🛒 *KEROS MAC MODS*
_(When accessing Kays store, use Chrome or Firefox, not Safari)_
• SPIISDv2 kit: https://bit.ly/42FO5P1
• All Products on Keros Mac Mods: https://en.infinityproducts.co.jp/shop-1
• 1.54 LCD: https://www.aliexpress.com/item/1005009104685556.html
🛒 *SOLDERING & CLEANING*
• 99% ISO Alcohol: https://amzn.to/3R5TRCk
• MG Chemicals Flux: https://amzn.to/3kuAcsZ
• Desoldering wick: https://amzn.to/4jbseUW
• Generic Solder 100g (60-40 Leaded Rosin Core 0.6mm, 2% flux): https://amzn.to/3FDRscn
or
• Kester Solder 454g (60-40 Leaded Rosin Core 0.8mm, 3.3% flux): https://amzn.to/3tLFwT9
• 2-spool Solder Holder: https://amzn.to/39hIMbt
• Hakko 599B Tip Cleaner: https://amzn.to/3RHy5o4
• Hakko Soldering Station (FX888DX): https://amzn.to/4kEttgq
• Hakko Fume Extractor: https://amzn.to/3MApWyb🛒 *TOOLS*
• Needle Nose Pliers: https://amzn.to/43U0WOc
• Helping Hands: https://amzn.to/4llkFfM
• 5x or 10x illuminated Magnifier: https://amzn.to/3YCySJ7
• Rubberized Vice: https://amzn.to/3x78yuX
• Vice & LED-lit 3x Magnifier & Rubberized Helping Hands: https://amzn.to/3xdAVHK
🛒 *OTHER STUFF*
• SD Cards I use for almost everything: Gigastone 16GB MLC V30: https://amzn.to/4jiEhiK
• ROM Xc (lets you use any of the 4 IIc ROMs): https://bit.ly/4a0Ia8U
• 3D Printing at JLPCB: https://jlc3dp.com/3d-printing-quote
• Rubber Feet for a 3D printed case: https://amzn.to/4jb34G0
• Gray 30cm/1 Ribbon Cable, 20-pin : https://amzn.to/3G9yP3y
• Rainbow 30cm/1 Ribbon Cable, 20-pin: https://amzn.to/4lC0daP
_NOTE: You can always buy a Ribbon cable from Kay, instead of Amazon._
• Drive Switcher from BMOW: https://bit.ly/3GbaD0P
(If you have one like I do, Kay recommends removing when using SPIISDs Adapter, but BMOW says you can just short the 2 dangling wires from the internal Drive Switcher board and then you use Kays Adapter with the SPIISDv2.)
• MacEffects BLACK Case & Keyboard: https://bit.ly/3CsStG2
• EYOYO 10 IPS Display: https://bit.ly/4gSm8ah
• KARATEKA T-shirt (mine is Navy): https://bit.ly/48Yx6ID
• Mac Motherboard Reloaded Services from CayMac: https://bit.ly/3YnMLgP
💾 *DOWLOADS*
• Javier Riveras CASE: https://bit.ly/3RTmzGQ
• Stephen Arsenaults CASE (DONT print the Lens at JLC): https://bit.ly/4ctHSIy
• Allen Williams CASE: https://bit.ly/4ie6Ddj
• Bruce Raynes CASE: coming in late Sept. 2025!
• Total Reply II: https://archive.org/details/TotalReplay2
📚 *REFERENCE*
• SPIISDv2 Assembly: https://tinyurl.com/3248728t
• SPIISDv2 Usage (& Case Photos): https://tinyurl.com/47ncys5x
• Video by @BigBadBench : https://www.youtube.com/live/Wj6tyfeDalo
• SmartPort protocol was designed for the UniDisk 3.5: https://tinyurl.com/mr29v2ea
📚 *VINTAGE SMARTPORT HARD DISKS*
• Chinook CT80c: https://tinyurl.com/5ftj79dz
• PROAPP: https://tinyurl.com/yyppd7fa
• Quark QC10: https://tinyurl.com/4656nbbx
• CIRTECH Uni-Mate (if you have a link, please email it to me!)
🙇♂️ *SPECIAL THANKS* to Kay Koba of Keros Mac Mods for answering my many questions and of course for making amazingly useful gadets like this! Thanks also to Stephen & Javier for feedback regarding their cases!
🙏 *THANK YOU, Paypal Supporters!* (since my last video)
• Brian Gorham 🇺🇸 (🥇TOP repeat supporter)
• Mark B Newlon 🇺🇸 (repeat supporter)
• Philippe Astier 🇫🇷 (monthly supporter)
• Mauro Acciaccaferri 🇮🇹 (monthly supporter)
• Gavin Maxwell 🇦🇺 (monthly supporter)
💰*HOW TO SUPPORT THIS CHANNEL*
https://www.paypal.me/supportJDW
📺 *Please SUBSCRIBE:*
http://www.youtube.com/c/JDW11/?sub_confirmation=1
🎬 *MY VIDEOS*
https://www.youtube.com/user/JDW26/videos
#SPIISDv2 #KerosMacMods #AppleIIc #JDW1")
