diff --git a/examples/SdFat_Flash_and_SDcard/SdFat_Flash_and_SDcard.ino b/examples/SdFat_Flash_and_SDcard/SdFat_Flash_and_SDcard.ino
index 8a7f8ee..a209887 100644
--- a/examples/SdFat_Flash_and_SDcard/SdFat_Flash_and_SDcard.ino
+++ b/examples/SdFat_Flash_and_SDcard/SdFat_Flash_and_SDcard.ino
@@ -39,7 +39,7 @@ void setup() {
     Serial.println(onboardFlash.getJEDECID(), HEX);
     Serial.print("Flash size: ");
     Serial.print(onboardFlash.size() / 1024);
-    Serial.println(" KB");
+    Serial.println(" KiB");
     Serial.print("Starting up SD Card...");
     if (!onboardSdCard.begin(getSDCardPin())) {
         Serial.println("No card found (is one inserted?)");
diff --git a/examples/SdFat_format/SdFat_format.ino b/examples/SdFat_format/SdFat_format.ino
index 83e0ef4..4f8401b 100644
--- a/examples/SdFat_format/SdFat_format.ino
+++ b/examples/SdFat_format/SdFat_format.ino
@@ -104,7 +104,7 @@ void setup() {
   }
 
   Serial.print(F("Flash chip JEDEC ID: 0x")); Serial.println(flash.getJEDECID(), HEX);
-  Serial.print(F("Flash size: ")); Serial.print(flash.size() / 1024); Serial.println(F(" KB"));
+  Serial.print(F("Flash size: ")); Serial.print(flash.size() / 1024); Serial.println(F(" KiB"));
 
   // Uncomment to flash LED while writing to flash
   // flash.setIndicator(LED_BUILTIN, true);
diff --git a/examples/flash_info/flash_info.ino b/examples/flash_info/flash_info.ino
index 30e7804..b4e77ab 100644
--- a/examples/flash_info/flash_info.ino
+++ b/examples/flash_info/flash_info.ino
@@ -76,7 +76,7 @@ void setup() {
   Serial.println(flash.getJEDECID(), HEX);
   Serial.print("Flash size: ");
   Serial.print(flash.size() / 1024);
-  Serial.println(" KB");
+  Serial.println(" KiB");
 }
 
 void loop() {
diff --git a/src/Adafruit_SPIFlashBase.cpp b/src/Adafruit_SPIFlashBase.cpp
index 7b12671..2b6c755 100644
--- a/src/Adafruit_SPIFlashBase.cpp
+++ b/src/Adafruit_SPIFlashBase.cpp
@@ -87,6 +87,10 @@ bool Adafruit_SPIFlashBase::begin(SPIFlash_Device_t const *flash_devs,
 
 #else
 
+#if defined(EXTERNAL_FLASH_DEVICES)
+/// List of all possible flash devices defined by board's variant.h
+static const SPIFlash_Device_t possible_devices[] = {EXTERNAL_FLASH_DEVICES};
+#else
 /// List of all possible flash devices used by Adafruit boards
 static const SPIFlash_Device_t possible_devices[] = {
     // Main devices used in current Adafruit products
@@ -100,6 +104,7 @@ static const SPIFlash_Device_t possible_devices[] = {
 
     // Other common flash devices
     W25Q16JV_IQ, W25Q32JV_IQ, AT25SF041, AT25DF081A};
+#endif /* if defined (EXTERNAL_FLASH_DEVICES) */
 
 /// Flash device list count
 enum {
diff --git a/src/flash_devices.h b/src/flash_devices.h
index af35403..c2035d9 100644
--- a/src/flash_devices.h
+++ b/src/flash_devices.h
@@ -30,7 +30,7 @@
 #include <stdint.h>
 
 typedef struct {
-  uint32_t total_size;
+  uint32_t total_size; // in bytes
   uint16_t start_up_time_us;
 
   // Three response bytes to 0x9f JEDEC ID command.
@@ -143,6 +143,19 @@ typedef struct {
     .single_status_byte = false, .is_fram = false,                             \
   }
 
+// Settings for the ISSI IS25LP016D 16Mib / 2MiB SPI flash.
+// Datasheet: https://www.issi.com/WW/pdf/25LP-WP016D.pdf
+#define IS25LP016D                                                             \
+  {                                                                            \
+    .total_size = 2097152, /* 2MiB */ .start_up_time_us = 5000,                \
+    .manufacturer_id = 0x9d, .memory_type = 0x60, .capacity = 0x15,            \
+    .max_clock_speed_mhz = 133, .quad_enable_bit_mask = 0x40,                  \
+    .has_sector_protection = false, .supports_fast_read = true,                \
+    .supports_qspi = true, .supports_qspi_writes = true,                       \
+    .write_status_register_split = false, .single_status_byte = true,          \
+    .is_fram = false,                                                          \
+  }
+
 // https://www.fujitsu.com/uk/Images/MB85RS64V.pdf
 // RDID has continuation code: 04-7F-03-02
 #define MB85RS64V                                                              \